Login

define power of lens and gives its S.I.unit

The ability of a lens to converge/diverge a beam of light rays is expressed in terms of its power (P). It is the inverse of focal length,f(in meters).

Hence, power of a lens is given by the relation

The SI unit of power is dioptre (D).

  • 74
View Full Answer

The degree of convergence or divergence of light rays achieved by a lens is expressed in terms of POWER.

It is represented by the letter P.

P= 1/f

The SI unit of power of lens is dioptre(D)

  • -4

The ability of the eyelens to converge or diverge an incident beam focused on it is termed as the power of the lens.

power of the lens is given by the relation .. : 1/ focal length(in metres)

  • 8
Power of a lens is defined as the reciprocal of its focal length i.e, P=1/F .ItaSIunit isDioptre(D) .Dioptre is the unit of power of a lens whose focal length is inmeters.
hope it helps!!thumbs uppls
  • 7
The power of a lens is the measurement of the degree of convergence or divergence of light ray falling on it.
  • -3
Power of lens is the reciprocal of the focal length {P=1/f}
  • -3
Yeahhh !
Thanks m8's :D
  • -10
 WHICH TYPE OF LENSES R USED IN TELESCOPE
  • -7
The degree of convergence or divergence of light rays achieved by a lens is termed as power . Its SI unit is dioptre and represented by capital D .
  • -4
power is ability to converge or diverge light rays
its SI unit is dioptre
  • -13
the ab
  • -9
Power is defined as the reciprocal of the focal length . 
   The S I unit of power is dropper .it is denoted by capital (D)
  • -7
The ability of a lens to converge/diverge a beam of light rays is expressed in terms of its power (P). It is the inverse of focal length,f(in meters). Hence, power of a lens is given by the relation The SI unit of power is dioptre (D). 
  • -3
The converging and diverging capacity of the lens is called as power of the lens. It's SI unit is dioptre.
  • -7
power of lens is defined as reciprocal of its focal length. P=1/f
Its S.I unit is dioptre.
one dioptre is defined as power of lens whose focal length is one meter.
  • -2
the degree of convergence or divergence of the light ray falling on the eye lens is known as power of lens

  • 24
It is reciprocal of the focal lens.
  • 1
The ability of a lens to converge/diverge a beam of light rays is expressed in terms of its power (P). It is the inverse of focal length,f(in meters).

Hence, power of a lens is given by the relation



The SI unit of power is dioptre (D).
  • -2
A ray of light strikes the mirror at the angle of 200 what is the angle of reflection Give the angle of incidence and reflection for normal incidence
  • -7
 S.I unit of power is dioptre(D).
  • 9
1.
  • -9
Where should an object be placed in front of a convex lens of focal length 0.12m to obtain a real image of size three times the size of an object, on the screen ? Answered by Arpita Mohan Sacred Heart Convent School Jamshedpur.

  • 3
The degree of converging and diverging light ray in a lens . Its express power of lens.
power of lens = 1/f
S.I unit is Diopter.
Its denoted by D
 
  • -1
Power is a reciprocal of focal length and its SI unit is diopter
  • -3
its correct
  • -2
the reciprocal of focal length is power its unit is dioptire denoted by D
  • -1

THE RESIPROCAL OF FOCAL LENGTH MEASURED IN METER IS CALLED POWER OF A LENS.
                    
  • 4
Power of lens is the reciprocal of focal length and it's so unit is dioptre
  • -2
The ability of lens to converge or diverge the light ray is called its power. It is the reciprocal ofbit focal length. It is written as :-

P = 1/f
The SI of power is dioptre.
  • -3
The deviation produced by a lens in the path of rays refracted through it, is a measure of its power. S.I unit is dioptre (D).
  • 2
Si unit
  • 0
it is define as the reciprocal of focal length and its S.I. unit is dioptre
  • -1
Please find this answer

  • 0
The power of lens is a measure of the degree of convergence or divergence of light rays falling on it . SI unit is dioptre
  • 0
Power of a lens is reciprocal of its focal length. Its SI unit is dioptre.
  • 0
The degree of convergence or divergence of light rays achieved by the lens is measured in term of its power. Its unit is DIOPTRE
  • 2
The degree of convergence or divergence of light rays achieved by a lens is expressed in terms of its power. The power of lens {P} is defined as the reciprocal of its focal length. Unit of power of lens is diopter {D}. It is measured in metre.
P=1/f { if in m}.
P=100/f { if in cm}.
  • 0
reciprocal of power is call balance and s i unit is Devta
  • 0
Thepp power of lens is the inverse proportion of focal length. And its S.I. unit is diopter (D). i.e., power of lens =1/focal length.
  • 2
Power of a lens is reciprocal of its focal length and it's SI unit is dioptre and represented as 'D'.
  • 0
Si unit = dioptre
  • 1
diopter
  • 0
here is your answer.....hope u like it...

  • 1
Power of lens refers to the capability of convex and concave lens to converge or diverge light and to which extent . It can be said that it is indirectly proportional to the focal lenght of that lens. The S.I. unit is "DIOPTRE" and it is always denoted with metre
  • 1
Diaptor (D)
  • -1
The ability of eye lena to converge or diverge the light rays is known as power of lens it is reciprocal of its focal length P=1/f Unit - diophtre (D)
  • 1
The degree of convergence and divergence of light rays achieved by light is called power of lens. Its S.I. unit is Dioptre.
 
  • 1
The reciprocal of focal length in metres is called power of a lens
p=1/f
S.I unit is dioptre
  • 1
Reciprocal of its focal length.si unit ...dioptre
  • 1
Power of lens os defined as the ability of a lens to converge or diverge the rays falling on it.
Its SI unit is dioptre
  • 1
English
  • 0
Power of a lens is 1/focal length
SI unit of power of a lens is Dioptre(D).
Dioptre is 1/f in m
  • 0
Power of lens is the ability of lens to converge all the light rays falling on it.
P=1/f
And the si unit of power is Diopter (D)
  • 0
Abcd.com
  • 0
Please find this answer

  • 0
The power lens is the ability of the lens to converge the rays of light falling on it. It S.I unit is dioptre symbolized as (D).
Formula of power:
P=1/f where "f" is focal length and "P" is the power of the lens.
I hope this will help???
  • 0
Power of a lens is defined as the reciprocal of its focal length.

It's S.I unit is diopter.
  • 0
The ability of a?lens?to converge/diverge a beam of light rays is expressed in terms of?its Power(P). P=1/f. The?SI unit?of?power of lensis Dioptre.It is denoted by the letter "D"?SI unitof length is metre(m).
  • -1
Dioptere and it is measure of degree of convergence or divergence of light rays falling on it
  • 0
Power of lens?is the ability of the?lens?to converge the rays of light falling on it. It can also be?defined?as P=1/f where f is the focal length. Dioptre is the?SI unit?of power of lens
  • 0
the reciprocal of focal length is called power of lens. it's unit is dioptre.
  • 0
Please find this answer

  • 0
SI unit is 'dioptre'
  • 0
It is the reciprocal of focal length. It's SI unit is dioptre (d)
  • 0
the power of a lens is equal to the reciprocal of its focal length measured in metres the SI unit of power is dioptre
  • 0
the power of a lens is equal to the reciprocal of its focal length measured in metre SI unit of power is dioptre
  • 0
Power of a lens is the measure of the degree of convergence or divergence of light rays falling on it. It's S.I unit is Dioptre.
  • 1
Dioptre
  • 0
Power of lens is defined as reciprocal of focal length
S. I unit -dioptre
  • 0
Power of lens is defined as reciprocal of focal length of lens.
S.I. unit of power is dioptre
It's is represented by the symbol "D".
  • 0
The deviation of the incident light rays produced by a lens on refraction through it is a measure of its power. SI unit dioptre
  • 0
When any light is falling on any lens and then the mechanism by which the light converges or diverges is called power of lens.
The S.I.unit of lens is Dioptre.
  • 0
The power of a lens is the degree of divergence or convergence.It is inversely proportional to focal length.
P=1/f
It's S.I. unit is dioptre
Hope it hepls
  • 0
Hi sudeshna the ability to accommodate. Focal length is called power of lens and s.i.unit is diopter
  • 0
Si unit is diopter
  • 0
The capacity of a lens to converge or diverge incident rays is called its Power.
It is denoted by 'P'.
It's S.I unit is Dioptre(D)
  • 0
Power of the lens is the ability to converge or diverge a light ray.

It's SI unit is Dioptre ( D ).
  • 0
Sorry i dont know
  • 0
Ability to converge or diverge the lens. S.I unit of power is Dioptre(D).
  • 0
power of lens is the ability of a lens to converge or diverge the light rays...
Si unit of power of lens is ( dioptre)..
Hope it helps.......
  • 0
Rate of consumption of energy is known as power and it's SI unit is dioptre
  • 0
Power is defined as the abilityof lens to converse or to diverese a beam of light.

Also, power is the resiprocal of focal length(m).

Its SI unit is Dioptre (D)
  • 0
Power of lens is defined as the reciprocal of the focal length of the lens is expressed in meter.
SI unit of power is dioptre donated by D.
  • 0
Ability of lens to converge or diverge light rays is called power of lens . Its S.I.unit is dioptre (D).
  • 0
The reciprocal of focal length taken in metres is called power of the lens.Its S.I unit is dioptre,denoted by d
  • 0
The convergence or divergence of light rays which is achieved by lens is the power of lens. The SI unit is dioptres
  • 0
The degree if convergence or divergence of light rays achieved by the lens is termed the power of lens. It is the reciporcal of focal length. The SI unit is dioptres,D
  • 0
Please find this answer

  • 0
Power is the degree of converging or diverging nature of the lens. S.I unit of power of lens is dioptre . The power of lens is said to be 1D or (1 dioptre) when the focal length of the lens is 1 meter. P=1/f p and f are inversely proportional. Thank you
  • 0
The ability of a lens to converge or diverge depends on its focal length, this is called power of lens.
It's si unit is dioptre
  • 1
It is defined as the reciprocal of focal length
S I unit is diapture (D)
  • 0
SI unit of the power of the lens is diopter
  • 0
it is the ability of the lens to converge and diverge light rays .
it's so unit is Diopter.
P=1/f
  • 0
Please find this answer

  • 0
The degree of convergence or divergence of light rays achieved by a lens is expressed in terms of power

SI unit `dioptre '(D)
  • 0
A power of lens is the reciprocal of its focal length. P=1/f The SI unit of power of a lens is "dioptre"(D).
  • 0
Please find this answer

  • 0
Diopter is the si unit of power of lens.Defined as the reciprocal of its focal length in metres.Or D=1/f
  • 0
Diopter is SI unit of power of lens.It is defined as the reciprocal of its focal length D=1/f
  • 0
Diopter is theSI unit for power of lens.It is defined as the reciprocal of its focal length.D=1/f
  • 0
Reciprocal of focal length
  • 0
power of lens can be defined as the ability to convert the rays of light falling on Earth it can also be defined as the 1/focal length and its unit is diopter.
  • 0
Power of lens is defined as reciprocal of focal length in metres.
It's SI unit is dioptre.

P=1/f
  • 0
Power of a lens-
Power of lens is a ability of eye lens to converge or diverge light ray is called power of a lens.The S.I unit of power of lens is 1 diopter.
  • 1
The power of lens is the power used in lenses by which the objects can be seen clear . it's formula is power=1/focal length and it's S.I. units are Diopetre
  • 0
Lens:- A piece of transparent material having curved surface...
  • 0
Power of lens is the reciprocal of its focal length 1/7(in meters)...
S.I. unit of lens of power is Dioptre (D)
  • 0
Power of lense is simply the reciprocal of its focal length. It is represented by P. SI unit of power of lense is dioptre. It is represented by D. P=1/f (where f is in meter)
  • 0
Power of lens is the measure of degree to which convergence or divergence. Of light take place

SI unit of power is diptore
  • 0
A lens is said to have a power of one dioptre,if it's focal length is one metre
  • 0
Power of lense is 1/f .
S.I.unite is dioptre
  • 0
Power of lens.

  • 0
Power of lens and it's S.I. Unit.

  • 0
Hi. Here's a solution of your query...

Power of a lens is the ability of the lens to converge or diverge the rays falling on it.
The power of a lens is denoted as the reciprocal of the focal length of the lens. Power of a lens is denoted by the letter 'P'.
P = 1/f(in metres).
The S.I. unit of power of lens is 'dioptre' (D). The power of a lens is one dioptre if it's focal length (f) is 1 metre.

Regards.
  • 0
It is the reciprocal of focal length.
S.i unit=diopter
  • 0
Please find this answer

  • 0
Power of lens is defined as reciprocal of focal length. It's S.I. unit is Dioptre
  • 0
Power of the lens is inversly propotional to focal length p=1/f and it's SI unit is watt
  • 0
The power of a lens is equal to the reciprocal of its focal let,when focal length is measured in metres.
Formula, power =. 1
F(in metre)
  • 0
Please find this answer

  • 0
Poweof lens is ability of the lens to converge or diverge the rays of light. Its S. Iunit isdiopter
  • 0
hello friend i am help you science ques..... Ok...

Power:
Power of a lens is the reciprocal of its focal length in metre is called a power.........
The SI unit of power of a lens is (dioptre).........

Ok friend please like and followers.....
  • 0
POWER OF LENS
* It is the ability of lens to either converge or diverge a beam of incident light.
* It's S.I. Unit is Dioptre ( D ) .4
  • 0
It is the reciprocal of focal length
And there si unit is is Dioptre denoted by D .
  • 1
Power of a lens is defined as the reciprocal of its focal length i.e, P=1/F. It's SI unit is Dioptre(D) .Dioptre is the unit of power of a lens whose focal length is in meters.
  • 0
Hii,
The power of a lens is a measure of the degree of convergence or divergence of light rays falling on it.and the SI unit is Dioptre (D).
  • 0
SI unit for power is dioptre

The degree of convergence or divergence of light rays achieved by a lens is expressed in terms of it's power.
  • 0
Power of a lens can be defined as the measure of convergence or divergence of the light rays falling on it.


SI Unit is Dioptre.

1 Dioptre is power of a lens whose focal length is 1 meter.
  • 0
The ability to converse or diverse of light is from a lense is called its power
The SI unit is diopter(D)
  • 0
Please find this answer

  • 0
Reciprocal of focal length is power of lens.
It is positive for convex lens and negative for concave lens.
  • 0
P=1/f
S.I unit is Dioptre (D)
  • 0
Power of lens is known as the inverse of the focal length of the lens measured in meter(m). S.I unit of power = Dioptre (D) Power of lense = 1/ focal length in meter.
  • 0
Power of lens = 1 / focal length of lens
S I unit is meter inverse. Also named as dioptre.
  • 0
The power of a lens is defined as the reciprocal of its focal length. It is represented by P. The SI unit of power is?dioptre. The power of a convex lens is positive, the power of a concave lens is negative as a concave lens has a negative focal length.
  • 0
The title of the story "The Triumph of Surgery" is appropriate
  • 0
Power of lense is the ability of lense to converge the rays of light falling on it .
Power of lense can be calculated by -
1/focal length.
It's S.I unit is Dioptre (D)
  • 0
It is defined the the degree of convergence or divergence of light rays achieved by a Lens.
  • 0
it is defined as the degree of convergence or divergence of light rays achieved by a lens. It's SI unit is diopter
  • 0
The divergence and convergence of image in a lence is colled power of lence.
S.I.unite of power is daiopter
  • 0
Power of lens is defined as its ability to converge or diverge the rays of light falling on it. SI unit of power is Dioptre.
The power of a lens is defined as the reciprocal of its focal length. It is represented by the letter P. The power P of a lens of focal length f (in m) is given by. P=1f. The SI unit of power of a lens is 'dioptre'.
Hope it workss!!!if this help u mark me as an expert..!!

  • 0
What are you looking for?