Oscillations and Waves MCQ's 1

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Oscillations and Waves
A test from chapter 7 and 8 i.e Oscillations and Waves of Physics part 1. This is Free online test for FSc and Entry test Preparation for UET, NUST, FAST, GIKI, PIEAS, NFC, Punjab University, UHS, other Engineering Universities and Medical Colleges.


1. A spring of force constant K is cut into three equal pieces. If these three pieces are connected in parallel, the force constant of the combination will be
    A) K/3
    B) K/9
    C) 3K
    D) 9K


2. A particle is executing simple harmonic motion of amplitude A. What fraction of the total energy is kinetic, when the displacement is half the amplitude?

    A) 1/4
    B) 1/8
    C) 1/2
    D) 3/4


3. Two sound waves of equal intensity I produce beats. The maximum intensity of sound produced in beats will be

    A) I
    B) 4I
    C) 2I
    D) I/2


4. The speed of a wave in a medium is 760 m/s. If 3600 waves pass through a point in a medium in 2 minute, its wavelength is

    A) 13.8 m
    B) 25.3 m
    C) 41.5 m
    D) 57.2 m


5. When a particle executig SHM passes through the mean position, it has

    A) minimum K.E and maximum P.E
    B) Maximum K.E and maximum P.E
    C) Maximum K.E and minimum P.E
    D) minimum K.E and minimum P.E


6. A simple pendulum of frequency f is taken up to a certain height above the ground and then dropped along with its suport so that it falls freely under gravity. The frequency of oscillations of the falling pendulum will

    A) remain equal to f
    B) become less than f
    C) become greater than f
    D) become zero


7. A source of sound is moving towards a stationary observer with 1/10 of the speed of sound. The ratio of apparent to actual frequency of sound is:

    A) 10/9
    B) 11/10
    C) 11/9
    D) 9/11


8. Which waves are used for under water communication

    A) Radio wave
    B) ultrasonic
    C) micro waves
    D) Infrasonic


9. Which one of the given cannot receive the4 ultrasonic

    A) dolphin
    B) bat
    C) cat
    D) huyman beings


10. A spring of force constant K is cut into two pieces such that one piece is double the length of the other. Then the longer piece3 will have a force constant of

    A) 2/3 K
    B) 3/2 K
    C) 3 K
    D) 6 K

I am Mechatronics and Control Engineer from UET, Lahore. Helping Engineering students gives me pleasure.

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