Oscillation — Physics MCQs (Class 11)
Free chapter-wise Physics MCQs with answers for MDCAT, FSc and entry tests.
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#185 The maximum velocity of a particle executing simple harmonic motion with an amplitude of 5 mm and frequency of 2 Hz is
A) 10 mm/sec
B) 20 mm/sec
C) 30 mm/sec
D) 40 mm/sec
#186 A spring of force constant k is cut into two equal parts. The force constant of each part is
A) \(k/2\)
B) \(k\)
C) \(2k\)
D) \(4k\)
#187 The time period of a mass suspended from a spring is T. If the spring is cut into four equal parts and the same mass is suspended from one of the parts, the new time period will be
A) \(T/4\)
B) \(T/2\)
C) \(2T\)
D) \(4T\)
#188 A particle executes simple harmonic motion with an angular velocity of 3.5 rad/sec and maximum acceleration of 7.5 m/sec². The amplitude of oscillation is
A) 0.28 m
B) 0.36 m
C) 0.53 m
D) 0.61 m
#189 The equation of motion of a particle is \(\frac{d^2x}{dt^2} + kx = 0\). The time period of motion is given by
A) \(\frac{2 \pi}{k}\)
B) \(\frac{2 \pi}{\sqrt{k}}\)
C) \(\frac{2 \pi}{k}\)
D) \(\frac{2 \pi}{\sqrt{k}}\)
#190 A particle is executing SHM with amplitude A. The displacement at which its kinetic energy is equal to its potential energy is
A) \(A/2\)
B) \(A/\sqrt{2}\)
C) \(A/4\)
D) \(A/3\)
#191 Two springs of spring constants \(k_1\) and \(k_2\) are connected in series. The effective spring constant is
A) \(k_1 + k_2\)
B) \(\frac{k_1 k_2}{k_1 + k_2}\)
C) \(k_1 + k_2\)
D) \(k_1 k_2\)
#192 The time period of a simple pendulum is T. If the length of the pendulum is increased by 21%, the new time period becomes
A) \(1.1 T\)
B) \(1.21 T\)
C) \(1.3 T\)
D) \(1.4 T\)
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