Top 1000+ Solved Physics MCQ Questions Answer
Q. Which of the following colours has got the maximum refractive index for glass?
a. Blue
b. Green
c. Red
d. Indigo
Q. The working principle of a washing machine is :
a. centrifugation
b. dialysis
c. reverse osmosis
d. diffusion
Q. Tape recorder should not be kept near one of the following things –
a. Clock
b. Magnet
c. Electrical switchboard
d. Radio
Q. Which physical quantity is measured in ‘siemens’?
a. Electric potential
b. Electrical conductance
c. Magnetic flux
d. Refractive index
Q. The surface tension of water on adding detergent to it –
a. increases
b. decreases
c. no change
d. becomes zero
Q. In a refrigerator, the cooling system should always be –
a. at the top
b. at the bottom
c. at the middle
d. can be anywhere
Q. The base of an electric iron is brightly polished mainly -
a. to make it smooth and frictionless
b. to make it rust-proof
c. to reduce heat loss by radiation
d. to make it more durable
Q. Lux is the SI unit of -
a. intensity of illumination
b. luminous efficiency
c. luminous flux
d. luminous intensity
Q. Eclipses occur due to which optical phenomena?
a. Reflection
b. Refraction
c. Rectilinear propagation
d. Diffraction
Q. Pure water is bad conductor of electricity because it is –
a. feebly ionized
b. not volatile
c. a very good solvent
d. a non-polar solvent
Q. Pycnometer is an instrument used to measure the –
a. Density
b. Intensity of solar radiation
c. Intensity of earthquake
d. High temperatures
Q. Rain drops acquire spherical shape due to -
a. viscosity
b. surface tension
c. friction
d. elasticity
Q. The angular velocity depends upon the rate of change of the _______.
a. Angular Distance
b. Angular acceleration
c. Angular Displacement
d. torque