Recent questions tagged light-reflection and refraction

+2 votes

1 answer

Two thin convex lens of power + 5 and +4 diopter are placed co-axially at a distance 10 cm.

asked Apr 5, 2019 in JEE by kratos

+1 vote

1 answer

When an object is placed between f and 2f of a concave mirror, would the image formed be (i) real or virtual and

asked Apr 5, 2019 in Class 12 by kratos

+1 vote

1 answer

Which of the following statements about laws of reflection is/are

asked Apr 4, 2019 in Class 12 by kratos

+3 votes

1 answer

For the same angle of incidence in media P, Q and R, the angles of refraction ate 45°,35° and 15° respectively.

asked Mar 31, 2019 in Class 12 by kratos

+2 votes

1 answer

A ray of light travels from a medium of refractive index μ to air. Its angle of incidence in the medium is θ,

asked Mar 29, 2019 in Class 12 by kratos

+1 vote

1 answer

You are given the following three lenses. Which two lenses will you use as an eyepiece and as an objective

asked Mar 28, 2019 in JEE by kratos

+2 votes

1 answer

A little girl was sleeping. Suddenly, she heard a loud noise and got scared.

asked Mar 27, 2019 in Class 12 by kratos

+3 votes

1 answer

A convex lens and concave mirror are separated by distance 80 cm, focal length of convex lens is 20 cm.

asked Mar 25, 2019 in JEE by kratos

+2 votes

1 answer

(a) Write the necessary conditions for the phenomenon of total internal reflection to occur.

asked Mar 23, 2019 in Class 12 by kratos

+3 votes

1 answer

Figure shows a top view of a square room. One wall is missing, and the wall 33.7° on the right is a mirror.

asked Mar 21, 2019 in Class 12 by kratos

+2 votes

1 answer

Which light rays undergoes two internal reflection inside a raindrop

asked Mar 18, 2019 in JEE by kratos

+1 vote

1 answer

An unsymmetrical double convex thin lens forms the image of a point object on its axis. Will the position of the image change if the lens is reversed?

asked Mar 17, 2019 in Class 12 by kratos

+2 votes

1 answer

A convex mirror and convex lens are held in water then what changes you observe in focal length

asked Mar 12, 2019 in JEE by kratos

+1 vote

1 answer

(a) Write the necessary conditions for the phenomenon of total internal reflection to occur.

asked Mar 11, 2019 in Class 12 by kratos

+1 vote

0 answers

How does the power of a lens vary with its focal length ?

asked Mar 10, 2019 in JEE by kratos

+1 vote

1 answer

(a) What is total internal reflection? (b) State two conditions necessary for total internal reflection to occur.

asked Mar 7, 2019 in Class 12 by kratos

+3 votes

1 answer

A convex lens of focal length 25 cm is placed coaxially in contact with a concave lens of focal length 20 cm.

asked Mar 7, 2019 in Class 12 by kratos

+2 votes

1 answer

The image formed by a concave mirror is (a) always real (b) always virtual

asked Mar 6, 2019 in JEE by kratos

+1 vote

1 answer

Redraw the diagram given below and mark the position of the centre of curvature of the spherical mirror used in the given set up.

asked Mar 6, 2019 in Class 12 by kratos

+2 votes

1 answer

A mirror is broken into two parts and these parts are separated by a distance of 1 cm as shown in

asked Feb 26, 2019 in Class 12 by kratos

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