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Aishani Vadi
Subject: Science
, asked on 24/5/18
An object is placed at a distance of 30cm from a convex mirror, the magnification is 1/2. Where should the object be placed to get a magnification of 1/3 ?
Answer
1
Kehkashan
Subject: Science
, asked on 24/5/18
Why u have taken n=cv n=3?1082?108n. =32n. =1.5? how
Answer
1
Kehkashan
Subject: Science
, asked on 24/5/18
Define absolute refractive index of a medium.Find its value for glass in which speed of light is 2?10 m/s. PLZ REPLY FAST
Answer
1
Sayantani Chatterjee
Subject: Science
, asked on 23/5/18
Plz solve this
2 plane mirrors A and B are aligned to each other. A light ray is incident at an angle of 30 degree at point just inside one end of A. The plane of incidence coincides with the plane of the figure. How many reflection will occur between the mirrors?
Figure is given below:
Answer
1
Vidhi Nimje
Subject: Science
, asked on 23/5/18
an object is placed at a distance of 30 cm from a concave lens of focal length 15cm list four characteristic of the image formed by lens
Answer
1
Sayantani Chatterjee
Subject: Science
, asked on 22/5/18
Q.1. Two plane mirrors A and B are aligned parallel to each other as shown in the figure. A light ray is incident at an angle of 30
$\xb0$
at point just inside one end of A. The plane is incidence coincides with the plane of the figure. How many reflections will occur between the mirrors?
Answer
2
Sayantani Chatterjee
Subject: Science
, asked on 22/5/18
Pls do it
Answer
1
Vidhi Nimje
Subject: Science
, asked on 21/5/18
what is nature of the image formed by a concave mirror if the magnification produced by the mirror is +3
Answer
7
Esha Dwivedi
Subject: Science
, asked on 20/5/18
Q.3. A beam of light converges towards a point O, 10 cm behind a concave mirror of focal length 20 cm. Where is the image formed?
(Ans:
$v=-\frac{20}{3}cm$
)
Answer
1
Esha Dwivedi
Subject: Science
, asked on 20/5/18
2. An object is placed 25 cm from the surface of a convex mirror and plane mirror is set so that the images formed in the two plane mirrors lie adjacent to each other. The plane mirror is 20 cm from the object. Find the radius of curvature of the convex mirror. (Answer :- R = 75 cm)
Answer
2
Jahnvi Kashyap
Subject: Science
, asked on 19/5/18
Derive Mirror Formula.
Answer
1
Jahnvi Kashyap
Subject: Science
, asked on 19/5/18
Rules for image formation with concave and convex mirror?
Answer
1
If And
Subject: Science
, asked on 16/5/18
light enters from air to water having refractive index 4/3. find the absolute refractive index of that medium
Answer
1
Tanishk Singh Rawat
Subject: Science
, asked on 13/5/18
Refractive Index of diamond is 2.42. What does this statement mean?
Answer
1
Tanishk Singh Rawat
Subject: Science
, asked on 13/5/18
Difference between Absoluteand Relative Refractive Index.
Answer
2
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2 plane mirrors A and B are aligned to each other. A light ray is incident at an angle of 30 degree at point just inside one end of A. The plane of incidence coincides with the plane of the figure. How many reflection will occur between the mirrors?

Figure is given below:

(Ans: $v=-\frac{20}{3}cm$)