Physics
Oscillation
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#41 The frequency $f$ of an oscillator is:
A) $f = \frac{1}{T}$
B) $f = \sqrt{T}$
C) $f = T$
D) $f = T^2$
#42 In resonance, the phase difference between the driving force and the oscillating object is:
A) one hundred eighty degrees
B) ninety degrees
C) zero
D) one hundred degrees
#43 The principle of operation of musical instruments like guitars is based on:
A) damped oscillations
B) resonance
C) forced oscillations
D) simple harmonic motion
#44 In free oscillations, the system:
A) does not oscillate
B) has diminishing amplitude
C) oscillates without external force
D) oscillates with external force
#45 The working principle of a tuning fork is based on:
A) forced oscillation
B) damped oscillations
C) simple harmonic motion
D) resonance
#46 The principle of operation of musical instruments like guitars is based on:
A) damped oscillations
B) resonance
C) simple harmonic motion
D) forced oscillations
#47 The equation for period of oscillation of a spring is:
A) $T = \frac{m}{k}$
B) $T = 2\pi m k$
C) $T = 2\pi \sqrt{\frac{m}{k}}$
D) $T = \sqrt{\frac{m}{k}}$
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