Physics MCQs for NET, IAS, State-SET (KSET, WBSET, MPSET, etc.), GATE, CUET, Olympiads etc. Part 9
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Question:
Luminous flux is expressed in
- Lumen
- Candela
- Weber
- Lue
Question:
Light travels through a glass plate of thickness d. If n is the refractive index of glass and c is the velocity of light in vacuum, the time taken by light to travel through the glass plate is
Question:
What is the magnification when an object is placed at 2f of a convex mirror?
Question:
A tank is filled with water up to a height of . The apparent depth of a needle at the bottom of the tank is
Question:
A man under water in a lake is viewing a boy standing on the bank of the lake. Then for him the boy appears to be
- Shorter
- Taller
- Of the sane size
- 16 cm
Question:
A convex mirror placed at a distance of from a candle forms a virtual image at the same position as that formed by a plane mirror at a distance of from the candle. What is the focal length of the convex mirror?
Question:
When light travels from 1 medium to another that remains unaltered is
- Speed
- Wave length
- Frequency
- Intensity
Question:
The length of a telescope is and magnification is 19. The focal length of the objective and eye piece are