HARD
12th Odisha Board
IMPORTANT
Earn 100

What is mean by the normal setting of an astronomical telescope? How its magnifying power differs when it is set with the final image at the near point?

Important Questions on Eye and Optical Instruments

EASY
12th Odisha Board
IMPORTANT
In what ways the size of the eye-ball is responsible for various defects of the eye?
MEDIUM
12th Odisha Board
IMPORTANT
How the focal length of the eye-lens account for various defects of the eye?
HARD
12th Odisha Board
IMPORTANT
What are short-sightedness and long-sightedness? Describe their causes and remedies?
HARD
12th Odisha Board
IMPORTANT
What is a microscope? Describe a simple microscope and derive an expression for its magnifying power?
HARD
12th Odisha Board
IMPORTANT

Write notes on magnifying power of

(a) a magnifier

HARD
12th Odisha Board
IMPORTANT

Write notes on magnifying power of

(b) a compound microscope

MEDIUM
12th Odisha Board
IMPORTANT

Write notes on magnifying power of:

(c) an astronomical telescope.

HARD
12th Odisha Board
IMPORTANT
With a neat ray diagram, describe the principle, working and use of a compound microscope. What should be done for achieving large magnifying power?