At present, a compact disc can only hold about 1 hour of music. This limit is due in large part to the fact that
A. a compact disc can't turn faster than about 5 turns per second without experiencing a net torque of zero.
B. light can't be focused to a spot that is significantly smaller than its wavelength.
C. the ridges in the aluminum layer of the compact disc can't experience destructive interference unless they have a wavelength that is almost equal to the distance between them.
D. a compact disc can't turn slower than about 5 turns per second without experiencing a net torque of zero.
Answer:B
At present, a compact disc can only hold about 1 hour of music. This limit is due in large part to the fact that
A. a compact disc can't turn faster than about 5 turns per second without experiencing a net torque of zero. B. light can't be focused to a spot that is significantly smaller than its wavelength. C. the ridges in the aluminum layer of the compact disc can't experience destructive interference unless they have a wavelength that is almost equal to the distance between them. D. a compact disc can't turn slower than about 5 turns per second without experiencing a net torque of zero.