General knowledge about Physics . Learn Physics MCQs Perfect for competitive exams and general awareness.
Q1. Light year is the unit of-
(a) distance
(b) time
(c) age
(d) luminous intensity
(a) distance
Q2. The instrument used to measure the intensity of light is called-
(a) anemometer
(b) colorimeter
(c) luxmeter
(d) altimeter
(c) luxmeter
Q3. Conservation of energy means that-
(a) energy is created and destroyed
(b) energy can be created
(c) energy cannot be created but can be destroyed
(d) energy can neither be created nor be destroyed
(d) energy can neither be created nor be destroyed
Q4. The weight of a body is :
(a) equal at all places on the earth
(b) maximum at the poles
(c) maximum at the earth
(d) more on hills than in plains
(b) maximum at the poles
Q5. When a ships enters the sea from the river, then-
(a) it rises slightly
(b) it sinks slightly
(c) it remains in the same level
(d) it sinks to the sea bed
(a) it rises slightly
Q6. The radius of curvature of a plane mirror is
(a) Zero
(b) One
(c) Infinite
(d) Between one and infinite
(c) Infinite
Q7. The diffusion of light in the atmosphere is caused by-
(a) Carbon dioxide
(b) Dust particles
(c) Helium
(d) Water vapour
(b) Dust particles
Q8. The following coating is made on the inner walls of the thermos bottle to keep the beverages at the same temperature for some time-
(a) Aluminum paint
(b) Land dust
(c) Silver coating
(d) Mercury coating
(c) Silver coating
Q9. Two persons on moon’s surface can not hear each other because-
(a) Their ears stop working on the moon
(b) There is no atmosphere on the moon
(c) They wear special space suits on the moon
(d) Sound travels very slow on the moon
(b) There is no atmosphere on the moon
Q10. The speed of sound is maximum in-
(a) Air
(b) Liquid
(c) Metals
(d) Vacuum
(c) Metals