41. What is the process by which an object’s velocity changes?
a) Acceleration
b) Deceleration
c) Velocity
d) Momentum
Answer: a) Acceleration
42. What is the unit of frequency?
a) Hertz
b) Watt
c) Joule
d) Ohm
Answer: a) Hertz
43. What is the formula for acceleration?
a) a = F/m
b) a = V/t
c) a = P/t
d) a = 1/2mv²
Answer: a) a = F/m
44. What is the process by which light bends as it passes through a medium?
a) Reflection
b) Refraction
c) Diffraction
d) Interference
Answer: b) Refraction
45. What is the SI unit of force?
a) Newton
b) Meter
c) Second
d) Kilogram
Answer: a) Newton
