Top 1000+ Solved Physics MCQ Questions Answer
Q. For which among the following house appliances, magnet is an essential part?
a. Calling bell
b. Fan
c. Washing machine
d. All of the above
Q. Cylindrical lens is used by a person suffering from -
a. astigmatism
b. myopia
c. hypermetropia
d. None of these
Q. Metals are good conductors of electricity because -
a. they contain free electrons
b. the atoms are lightly packed
c. they have high melting point
d. All of the above
Q. Speed of sound in solids is -
a. 10 times that in gas/ 10
b. 20 times that in gas/ 20
c. 5 times that in gas/ 5
d. 15 times that in gas/ 15
Q. To open a door easily, the handle should be fixed –
a. near the hinges
b. away from mid-point opposite to hinges
c. in the middle
d. None of these
Q. Velocity of sound in air does not depend on –
a. Density of air
b. Temperature of air
c. Pressure of air
d. Humidity of air
Q. Conversion of sound energy into electrical energy is done by –
a. Solar cell
b. Gramophone
c. Microphone
d. Loudspeaker
Q. The theory of inheritance of acquired characters was propounded by -
a. Charles Darwin
b. Gregor Mendel
c. J. B. Lamarck
d. Weismann
Q. A jet engine works, on the principle of conservation of -
a. linear momentum
b. angular momentum
c. energy
d. mass
Q. Which electromagnetic radiation is used for satellite communication?
a. Ultraviolet
b. Infrared
c. Microwave
d. Millimeter wave
Q. Solar cells work on the principle of –
a. photovoltaic effect
b. photoelectric effect
c. photoconductive effect
d. photosynthesis
Q. When a piece of stone is immersed in water, it displaces water of equal –
a. Density
b. Specific gravity
c. Mass
d. Volume
Q. Efficiency of the catalyst depends on its
a. physical state
b. amount used
c. molecular state
d. number of free valencies
Q. The oil in the wick of lamp rises due to
a. Pressure difference
b. Pheonomenon of capillarity
c. Low viscosity of oil
d. Force of cohesion