Top 1000+ Solved Physics MCQ Questions Answer
Q. If an electron and a photon have the same wavelength, then they will have the same –
a. velocity
b. linear momentum
c. angular momentum
d. energy
Q. In hydel power station, the motion produced in turbines is due to –
a. flow of water
b. burning of coal
c. burning of diesel
d. production of steam
Q. The point where total mass of a body is supposed to be concentrated is known as –
a. Dead centre
b. Centre of mass
c. Centre of gravity
d. Centre of motion
Q. Curie is an unit of –
a. Radioactivity
b. energy of Gamma rays
c. intensity of Gamma rays
d. work function
Q. The mass of an electron in motion depends upon -
a. Direction of motion
b. B its velocity
c. C its velocity of e-
d. D it’s shell number
Q. Water drops cannot stick to the oily surface due to –
a. lack of adhesive force
b. surface tension
c. cannot mix each other
d. water is lighter than oil
Q. Decibel is the unit of .
a. Speed of light
b. Intensity of sound
c. Intensity of heat
d. None of these
Q. Certain substances loose their electrical resistance completely at super low temperature. Such, substances are called.
a. Super conductors
b. Semi conductors
c. Dielectrics
d. Perfect conductors
Q. In a transistor, the base is .
a. an insulator
b. a conductor of low resistance
c. a conductor of high resistance
d. an extrinsic semiconductor
Q. Sound waves are produced by -
a. Linear motion
b. Circular motion
c. Vibrating bodies
d. Transitional motion
Q. The weight of a body acts through the centre of –
a. gravity
b. mass
c. both (1) and (2)
d. buoyancy
Q. A wheel-barrow is an example of –
a. class III lever
b. pulley system
c. class I lever
d. class II lever
Q. The work done by the string of a simple pendulum during one complete oscillation is equal to
a. Total energy of the pendulum
b. Kinetic energy of the pendulum
c. Potential energy of the pendulum
d. Zero