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10/22/21, 8:21 PM, Classplus, TEST, Physics + Chemistry (#CET Level-UT-XII-24.10.2021), QUESTIONS, SECTIONS, 1. Physics (Oscillations) - 50 Questions, 2. Chemistry (Solid state & Solution) - 50 Questions, Section 1: Physics (Oscillations) -50 Questions, 1 The physical quantity whose SI unit is the same as that of the force constant is, pressure, O surface tension, O potential energy, torque, Correct: +1, The equation of displacement of a harmonic oscillator is * =3sinat + 4cos at, amplitude of the particle will be, 2, . The, O 2, O 7, O 12, Correct: +1, 3, When a mass of 1 kg is suspended from a spring it is stretched by 0.4 m. A mass of 0.25kg is suspended from the spring and the spring is, allowed to oscillate. If g= 10/s2, then its period of oscillation will be, O 0.5 sec, O 0.4 sec, O 0.628 sec, O 1.5 sec, Correct: +1, 4 A body performs a S.H.M. of amplitude a. If the speed of the particle is half of its, maximum speed, then the displacement of the particle is

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10/22/21, 8:21 PM, Classplus, O a, O 2a, Correct: +1, 5 For a linear harmonic oscillator, period is a second and amplitude is 5cm. The velocity, of the oscillator when it is at a distance of lcm from the extreme position is, 6 cm/s, O 5 cm/s, O 4 cm/s, O 3 cm/s, Correct: +1, 6 In a S.H.M. the path length is 4 cm and the maximum, acceleration is 2n2 cm/s2. The periodic time of S.H.M. is, 2s, 4s, Correct: +1, 7 A particle performs a S.H.M. of amplitude 10cm and period 12s. What is the speed of, the particle 3s, after passing through its mean position, O 5 cm/s, O 10 cm/s, O zero, O 7.5 cm/s, Correct: +1, 8 The velocity of a particle executing a S.H.M. of frequency 10 oscillations/sec is , when, it is at the mean position. Upto what maximum distance, the particle will be displaced, O 2 cm, 3 сm, 4 cm

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10/22/21, 8:21 PM, Classplus, О5 ст, Correct: +1, A horizontal platform with a small object placed on it executes a linear SHM in the vertical direction. The amplitude of oscillation is 40cm., [Use g =10m/s, What should be the least period of these oscillation, so that the object is not detached from the platform?, O 0.2 tS, 0.3 tS, O 0.4 tS, O 0.5 tS, Correct: +1, 10 In a linear S.H.M. the acceleration of the particle is zero, when its velocity is, O Zero, O maximum, Half of its maximum value, O minimum, Correct: +1, 11 A body of mass 200g is executing a S.H.M. of amplitude 50cm and period 1s. The, (usen =10), magnitude of maximum force acting on the particle is, O 1N, O 2 N, O 3 N, 4 N, Correct: +1, 12 The periodic time of a particle performing a linear S.H.M. is 12sec. It starts from the, mean position., amplitude of S.H.M.?, ter 2 seconds, its velocity is found to be t cm/sec. Wha, 4 cm, 08 cm, O 12 cm, O 16 cm, Correct: +1, 13 A particle performs a S.H.M. of period 2n sec and amplitude 2cm. At what distance, from the mean position, its velocity and acceleration are numerically equal

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10/22/21, 8:21 PM, Classplus, 2cm, V3cm, O vocm, O 5 cm, Correct: +1, 14 The maximum velocity and maximum acceleration of a particle performing a linear, S.H.M. are a and B respectively. Then its periodic tiem is given by, T =-, a, 2ла, T =, T =, 2.ra, 2πα, Correct: +1, 15, 2л, The periodic time of a particle executing a linear S.H.M. is @ . If its velocity at a, distance b from the mean position is V3ba, when the path length of the particle is, 2b, O 3b, O 4b, Correct: +1, 16 The maximum velocity for a particle in S.H.M. is 0.16m/s and the maximum, acceleration is 0.64 m/s2. The amplitude of S.H.M. is, 4 x 10-2, 4 x 10-1 m, 4 x 101 m, 4 x 10 3 m, Correct: +1

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10/22/21, 8:21 PM, Classplus, 17 A particle is performing a S.H.M. angular velocity 4rad/s and maximum acceleration of, 8 m/s2. What is its path length, O 0.5 cm, O 0.75 cm, O 1 m, O 2 m, Correct: +1, d?x, +ax =0, 18, A particle is executing a linear S.H.M. and its differential equaton is dt?, time period of motion is, Its, O 27, a, O 2ta, O 2n a, Correct: +1, 19 A particle executes a S.H.M. of amplitude 4 cm and period 4sec. If at time t= 0, then, net force acting on the particle is zero, then its velocity at that point is given by, O 2 T cm/s, Ο πcm/s, T 2 cm/s, O 31 cm/s, 4, Correct: +1, 20 A particle executes a S.H.M. of amplitude 20cm and perod 3s. What is the minimum, time required by the particle to move between two points 10cm on either side of the, mean position, O 1s, O 3, 4, O 1, O 1, Correct: +1