Physics General Knowledge MCQs

41. What is the process by which an object’s velocity changes?
a) Acceleration
b) Deceleration
c) Velocity
d) Momentum

42. What is the unit of frequency?
a) Hertz
b) Watt
c) Joule
d) Ohm

43. What is the formula for acceleration?
a) a = F/m
b) a = V/t
c) a = P/t
d) a = 1/2mv²

44. What is the process by which light bends as it passes through a medium?
a) Reflection
b) Refraction
c) Diffraction
d) Interference

45. What is the SI unit of force?
a) Newton
b) Meter
c) Second
d) Kilogram