51. Which type of wave is used to transmit information in a television?
a) Sound wave
b) Radio wave
c) Light wave
d) X-ray wave
Answer: b) Radio wave
52. What is the formula for gravitational potential energy?
a) U = Fd
b) U = QV
c) U = mgh
d) U = 1/2mv²
Answer: c) U = mgh
53. Which law states that every action has an equal and opposite reaction?
a) Newton’s First Law
b) Newton’s Second Law
c) Newton’s Third Law
d) Kepler’s Third Law
Answer: c) Newton’s Third Law
54. What is the SI unit of electric charge?
a) Coulomb
b) Ohm
c) Joule
d) Newton
Answer: a) Coulomb
55. What is the formula for kinetic energy?
a) K = Fd
b) K = QV
c) K = mv²/2
d) K = P/t
Answer: c) K = mv²/2
