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JEE 2020 Physics: Oscillations and waves Quiz 2 (22.08.2019)

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Question 1

A particle moves along the x-axis according to, x = A [1 + sin ωt]. What distance does it travel between t = 0 and t = 2.5π/ω?

Question 2

A particle executes simple harmonic motion and is located at x= a, b and c at times

and

respectively. The frequency of the oscillation is

Question 3

A body is in simple harmonic motion with time period half second

and amplitude one cm

. Find the average velocity in the interval in which it moves from equilibrium position to half of its amplitude.

Question 4

Two masses m and 2m are connected with a spring of spring constant k and length d is kept at rest on a friction less plane. What will be the shortest distance between the masses when at t=0 mass m is pushed with a velocity v towards the second mass.

Question 5

What is the phase difference between two simple harmonic optionedpresented byx1=Asin

and x₂Acos(

Question 6

A person sitting in a car moving towards a loudspeaker of 4 KHz records the frequency as 4.5 kHz. Another man riding a cycle which is returning towards the loudspeaker, records frequency as 5 kHz. Ratio of speed of cycle to car is

Question 7

A sound source of frequency 250 Hz completes one revolution in 3 sec is revolving in a circle of radius 10 m. Frequency at which the horn will be heard by the people as it approaches them.

Question 8

A car at 11 m/s sounds a horn at 187 Hz, while moving towards a stationary source of sound of 176 Hz. If the car in front of it does not hear any beat , then its speed is

Question 9

There are two waves having wavelengths 100 cm and 101 cm and same velocity 303 m/s. The beat frequency is

Question 10

A sound wave is generated by the howl of a wolf in the night. How would we describe the motion of a particular air molecule near the ground, a mile away from the wolf, on average (i.e. ignoring the random wandering of gas molecules)?

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Aug 22JEE & BITSAT