Academictask provides MCQs of Physics from Basic to Advance, so that you can prepare accordingly. Physics Mcqs section is useful for both students and job seekers i.e MCAT ECAT ETEA test preparation, PPSC Test, FPSC Test, SPSC Test, KPPSC Test, BPSC Test, other competitive and entry test preparations. Here you will find physics MCQs and answers with detailed explanations. MCQs of Physics include basic physics MCQs, Measurements MCQs, Vectors And Equilibrium MCQs, Work and Energy MCQs, Motion and Force MCQs, Circular Motion MCQs, Fluid Dynamics MCQs, Waves MCQs, Heat and Thermodynamics MCQs, Current Electricity MCQs, Electrostatics MCQs, Electromagnetism MCQs, Electromagnetic Induction MCQs, Alternating Current MCQs, Nuclear Physics MCQs, etc.

161. Which experiment shows that wavelength of light is smaller than that of sound___________________?

A. Diffraction
B. Polarization
C. Interference
D. Reflection

162. When a force is parallel to the direction of motion of the body, then work done on the body is_____________________?

A. zero
B. minimum
C. infinity
D. maximum

163. If a body a mass of 2 kg is raised vertically through 2m, then the work done will be _________________?

A. 38.2 J
B. 392.1 J
C. 39.2 J
D. 3.92 J

164. The average power and instantaneous power become equal if work is done at __________________?

A. any rate
B. at variable rate
C. at uniform rate
D. at high rate

165. Proton electron neutron and a particles have same momentum. Which of them have highest K.E ?

A. Proton
B. electron
C. neutron
D. a-particle

166. Work done by variable force is determine by dividing____________________?

A. force into small interval
B. displacement into small interval
C. both force and displacement into small intervals
D. force into small and displacement into large intervals

167. Light on passing through a Polaroid is ___________________?

A. plane polarized
B. un-polarized
C. circularly polarized
D. elliptically polarized

168. Diffraction fringes are____________________?

A. equally spaced
B. distance between them increases
C. distance between then decreases
D. they are adjacent with no space in between

169. A thing that emits its own light is___________________?

A. luminous
B. non-luminous
C. incandescent
D. bright

170. Gives the definition of metre in terms of wavelength of red cadmium light ___________________?

A. Newton
B. Einstein
C. Michelson
D. Galileo