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Chapter Test: Waves - 2 - JEE MCQ


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30 Questions MCQ Test Physics for JEE Main & Advanced - Chapter Test: Waves - 2

Chapter Test: Waves - 2 for JEE 2024 is part of Physics for JEE Main & Advanced preparation. The Chapter Test: Waves - 2 questions and answers have been prepared according to the JEE exam syllabus.The Chapter Test: Waves - 2 MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Chapter Test: Waves - 2 below.
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Chapter Test: Waves - 2 - Question 1


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Chapter Test: Waves - 2 - Question 2

In a resonance column experiment, the first resonance is obtained when the level of the water in the tube is at 20 cm from the open end. Resonance will also be obtained when the water level is at a distance of -

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Chapter Test: Waves - 2 - Question 3


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Chapter Test: Waves - 2 - Question 4

For the wave shown in figure, the wavelength and frequency, if its speed is 320 m/sec, are -


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Chapter Test: Waves - 2 - Question 5


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Chapter Test: Waves - 2 - Question 6

Which relation is giving the correct information for the shown tuning forks –


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Chapter Test: Waves - 2 - Question 7


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Chapter Test: Waves - 2 - Question 8

Stationary waves are set up in air column. Velocity of sound in air is 330 m/s and frequency is 165 Hz. Then distance between the nodes is -

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Chapter Test: Waves - 2 - Question 9


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Chapter Test: Waves - 2 - Question 10

The velocity of sound in air is 330 m/s. The r.m.s. velocity of air molecules (γ = 1.4) is approximately equal to -

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Chapter Test: Waves - 2 - Question 11


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Chapter Test: Waves - 2 - Question 12


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Chapter Test: Waves - 2 - Question 13


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Chapter Test: Waves - 2 - Question 14


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Chapter Test: Waves - 2 - Question 15


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Chapter Test: Waves - 2 - Question 16

A tuning fork of frequency n is sounded at the open end of a long cylindrical tube having a side opening and fitted with a movable reflecting piston. On moving the piston through 9 cm, the intensity of sound heard by the listener changes from maximum to minimum. If speed of sound is 360 m/s, value of n is 


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Chapter Test: Waves - 2 - Question 17


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Chapter Test: Waves - 2 - Question 18

In a resonance pipe the first and second resonance are obtained at lengths 22.7 cm and 70.2 cm respectively. What will be the end correction -

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Chapter Test: Waves - 2 - Question 19

A wall is moving with velocity u and a source of sound moves with velocity u/2 in the same direction as shown in the figure. Assuming that the sound travels with velocity 10u. The ratio of incident sound wavelength on the wall to the reflected sound wavelength by the wall, is equal to -


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Chapter Test: Waves - 2 - Question 20

One end of a thin metal tube is closed by thin diaphragm of latex and the tube is lower in water with closed end downward. The tube is filled with a liquid 'x'. A plane progressive wave inside water hits the diaphragm making an angle 'θ' with its normal. Assuming Snell's law to hold true for sound. Maximum angle 'θ' for which sound is not transmitted through the walls of tube is (velocity of sound in liquid x = 740√3 m/s and in water = 1480 m/s)

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Chapter Test: Waves - 2 - Question 21


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Chapter Test: Waves - 2 - Question 22


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Chapter Test: Waves - 2 - Question 23


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Chapter Test: Waves - 2 - Question 24

The frequency of a car horn is f. What frequency is observed if both the car and the observer are at rest, but a wind is blowing from the car toward the observer ?

Detailed Solution for Chapter Test: Waves - 2 - Question 24

The distance between source and receiver is not changing, so there is no change in frequency.

Chapter Test: Waves - 2 - Question 25

A tuning fork and an air column in resonance tube whose temperature is 51°C produces 4 beats in 1 second when sounded together. When the temperature of the air column decreases, the number of beats per second decreases. When the temperature remains 16°C, only 1 beat per second is produced. Then the

frequency of the tuning fork is -

Detailed Solution for Chapter Test: Waves - 2 - Question 25


Chapter Test: Waves - 2 - Question 26

Plane microwaves from a transmitter are directed normally towards a plane reflector. A detector moves along the normal to the reflector. Between positions of 14 successive maxima, the detector travels a distance 0.14 m. If the velocity of light is 3 × 108 m/s, find the frequency of the transmitter.

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Chapter Test: Waves - 2 - Question 27

In YDSE how many maxima can be obtained on the screen if wavelength of light used is 200nm and d = 700 nm.

Detailed Solution for Chapter Test: Waves - 2 - Question 27

Given that λ = 200nm, d=700nm
θ = λ/d
We know that maximum angle can be 900
No of rings that can be obtained say n,

If θ is so small then −

Chapter Test: Waves - 2 - Question 28

In a YDSE, the central bright fringe can be identified.

Detailed Solution for Chapter Test: Waves - 2 - Question 28

If we use white light instead of monochromatic light then we would observe the formation of bright colored fringes forming an interference patterns which resemble the seven colors of a VIBGYOR. Here the white light would split into its fundamental colors and for the central fringe the colors won’t split.

Chapter Test: Waves - 2 - Question 29

In Young's double slit experiment, the wavelength of red light is 7800 Å and that of blue light is 5200 Å. The value of n for which nth bright band due to red light coincides with (n + 1)th bright band due to blue light, is

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Chapter Test: Waves - 2 - Question 30

If the Young's double slit experiment is performed with white light, then which of the following is not true

Detailed Solution for Chapter Test: Waves - 2 - Question 30

The central fringe will be white because all the component color bands will superimpose there. The option (a) is true.
Since the fringes of different wavelengths of light have different fringe-widths, there will not be a completely dark fringe. Option (b) is true.
Since the wavelength of the violet light is nearly half of the red light, the fringe-width of the violet light is half of the red light. Since the central bright violet fringe combines with other fringes to form the white fringe, the next to it will be a minima for violet light. So violet will not be next to the central white fringe. Next will be a very thin band of white light minus violet light which will give a shade of off white. In this way, the components of indigo, blue, green, yellow and orange colors will be withdrawn respectively in the very thin consecutive bands. These will effect in different off white shades which cannot be clearly differentiated from the white band. The first color away from the center will be recognized as red when in these very thin bands yellow + orange + red, orange + red or red remains. Hence the option (d) is true.
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Young's Double Slit Experiment with White light

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