Physics
Oscillation
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#49 The acceleration in SHM is given by:
A) $a(t) = -\omega^2 x(t)$
B) $a(t) = \omega x(t)$
C) $a(t) = A\omega^2$
D) $a(t) = -A\omega^2 \cos(\omega t + \phi)$
#50 In a pendulum clock, the time period depends on:
A) the amplitude of the pendulum
B) the weight of the pendulum
C) the length of the pendulum
D) the temperature
#51 In damped oscillations, the amplitude:
A) increases with time
B) remains constant
C) decreases with time
D) depends on temperature
#52 The amplitude of an oscillating system at resonance:
A) decreases
B) remains constant
C) increases significantly
D) becomes zero
#53 The period $T$ of a simple pendulum is:
A) $T = 2\pi \sqrt{\frac{L}{g}}$
B) $T = 2\pi\sqrt{\frac{g}{L}}$
C) $T = \frac{1}{g}$
D) $T = \frac{L}{g}$
#54 In heavy damping, the system:
A) oscillates with a low amplitude
B) remains in equilibrium
C) oscillates with a high amplitude
D) does not oscillate
#55 The period $T$ of a simple pendulum is:
A) $T = 2\pi \sqrt{\frac{L}{g}}$
B) $T = \frac{1}{g}$
C) $T = \frac{L}{g}$
D) $T = 2\pi\sqrt{\frac{g}{L}}$
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