MEDIUM
12th Karnataka Board
IMPORTANT
Earn 100

Obtain the equation for apparent depth.

Important Questions on Ray Optics and Optical Instruments
MEDIUM
12th Karnataka Board
IMPORTANT
What is optical density and how is it different from mass density?

MEDIUM
12th Karnataka Board
IMPORTANT
A needle is placed away from a convex mirror of focal length . Give the location of the image and the magnification. Describe what happens as the needle is moved farther from the mirror.

MEDIUM
12th Karnataka Board
IMPORTANT
Use the mirror equation to deduce that:
an object placed between and of a concave mirror produces a real image beyond .
[Note: This exercise helps you deduce algebraically properties of images that one obtains from explicit ray diagrams.]

MEDIUM
12th Karnataka Board
IMPORTANT
Answer the following questions:
You have learnt that plane and convex mirrors produce virtual images of objects. Can they produce real images under some circumstances? Explain.

EASY
12th Karnataka Board
IMPORTANT
Define the centre of curvature of a spherical mirror?

MEDIUM
12th Karnataka Board
IMPORTANT
Light incident normally on a plane mirror attached to a galvanometer coil retraces backwards as shown in the figure below. A current in the coil produces a deflection of of the mirror. What is the displacement of the reflected spot of light on a screen placed away?

MEDIUM
12th Karnataka Board
IMPORTANT
Due to which phenomenon, an air bubble in water shines.

HARD
12th Karnataka Board
IMPORTANT
Why does a diamond sparkle more than an imitation cut to the same size?
