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Krithi ♀️
Subject: Science
, asked on 9/5/18
Q.2. When a bright object is placed 10 cm away from a concave mirror, its real image is formed at a distance 40 cm from the mirror. What is the focal length of the mirror?
Answer
1
Krithi ♀️
Subject: Science
, asked on 9/5/18
How fast does light travel in a glass of refractive index 1.5??
Answer
1
Asfaq Jalal
Subject: Science
, asked on 6/5/18
Q). Study the given Ray diagrams and identify the devices 'X' and 'Y'. Also find the focal length of the devices.
Answer
2
Manogna
Subject: Science
, asked on 6/5/18
explain new cartesian sign convention
Answer
1
Anjali
Subject: Science
, asked on 2/5/18
Why light bends towards the normal when it travels from rarer to denser medium. Explain with diagram.
Answer
5
Harshvardhan Singh Shekhawat
Subject: Science
, asked on 30/4/18
Q. The image formed in the direction of object from lence called vertical but how is it possible light will travel forward but image is backward
Answer
1
Shivangi Thakur
Subject: Science
, asked on 26/4/18
rays of light are entering from glass to glycerine if the absolute refractive index of glass is 1.5 and that of glycerin is 1.47 then find the refractive index of glycerine with respect to glass.... Please experts solve this.. I have a doubt...
Answer
1
Neha
Subject: Science
, asked on 23/4/18
Solve this:
Q.2. A ray of light moving along principal axis is falling on a concave mirror. Draw the path of reflected ray what is the value of angle of incidence and angle of reflection in this case.
Answer
1
Neha
Subject: Science
, asked on 23/4/18
Answer the 7th question
Q.7. An object 2 cm high when placed in front of a converging mirror produces a virtual image 3 cm high. If the object is placed at a distance of 8 cm from the pole of the mirror calculate (i) the position of the image (ii) focal length of the converging mirror. ( ans v = 12 cm, f = - 24 cm)
Answer
1
Afmi
Subject: Science
, asked on 15/4/18
an object 4cm in size is placed at 25cm in front of a concave mirror of focal length 15cm. At what distance from the mirror should a screen be placed in order to obtain a sharp image. Find the nature and size of the image. Experts answer
Answer
1
Ashi .
Subject: Science
, asked on 4/4/18
Here it's written that :
Aperture of the mirror is assumed as small.
What does it mean ????
Aperture
The surface of the mirror from which reflection can take place is called its aperture.
Generally the aperture of the mirror is assumed as small.
Pole
The central point on the surface of the mirror is called its pole
Answer
2
Jahanvi
Subject: Science
, asked on 3/4/18
Solve this:
Answer
1
Somya .s. Rath
Subject: Science
, asked on 31/3/18
I want to ask that what is the first chapter in physics for CBSE class 10
Answer
4
Somya .s. Rath
Subject: Science
, asked on 31/3/18
Please send me the latest CBSE class 10 syllabus for all subjects
Answer
1
Eshita Rastogi
Subject: Science
, asked on 30/3/18
If a charged particle is projected in a magnetic field and is parallel to field. Then the path followed by
the particle is :
(A) Straight line (B) Circle
(C) Ellipse (D) None of these
Answer
1
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Q.2. A ray of light moving along principal axis is falling on a concave mirror. Draw the path of reflected ray what is the value of angle of incidence and angle of reflection in this case.
Q.7. An object 2 cm high when placed in front of a converging mirror produces a virtual image 3 cm high. If the object is placed at a distance of 8 cm from the pole of the mirror calculate (i) the position of the image (ii) focal length of the converging mirror. ( ans v = 12 cm, f = - 24 cm)
Aperture of the mirror is assumed as small.
What does it mean ????
Aperture
The surface of the mirror from which reflection can take place is called its aperture.
Generally the aperture of the mirror is assumed as small.
Pole
The central point on the surface of the mirror is called its pole
the particle is :
(A) Straight line (B) Circle
(C) Ellipse (D) None of these