MCQ Questions for Class 11 Physics Chapter 15 Waves with Answers

Waves Class 11 Physics MCQs Questions with Answers

Check the below NCERT MCQ Questions for Class 11 Physics Chapter 15 Waves with Answers Pdf free download. MCQ Questions for Class 11 Physics with Answers were prepared based on the latest exam pattern. We have Provided Waves Class 11 Physics MCQs Questions with Answers to help students understand the concept very well.

Class 11 Physics Chapter 15 Quiz

Class 11 Physics Chapter 15 MCQ Online Test

You can refer to NCERT Solutions for Class 11 Physics Chapter 15 Waves to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Waves Class 11 Physics MCQ online test

Q1.	Which of the following expressions is that of a simple harmonic progressive wave
	A.a sin wt
	B.a sin (wt) cos (kx)
	C.a sin (wt – kx)
	D.a cos kx

Ans: a sin (wt – kx)

Q2.	Energy is not carried by
	A.Longitudinal progressive waves
	B.Electromagnetic waves
	C.Transverse progressive waves
	D.Stationary wave

Ans: Stationary wave

Q3.	In stationary waves
	A.Energy is uniformly distributed
	B.Energy is minimum at nodes and maximum at antinodes
	C.Energy is maximum at nodes and minimum at antinodes
	D.None of these

Ans: Energy is minimum at nodes and maximum at antinodes

Q4.	Two tuning forks of frequencies 256 and 258 vibrations/second are sounded together. Then the time interval between two consecutive maxima heard by an observer is
	A.2 sec
	B.0.5 sec
	C.250 sec
	D.252 sec

Ans: 0.5 sec

Q5.	Which one of the following cannot represent a traveling wave
	A.y = f (x – nt)
	B.y = ym sin k (x + nt)
	C.y = ym log (x – nt)
	D.y = f (x² – nt²)

Ans: y = ym log (x – nt)

Q6.	The wavelength of sound in air is 10 cm. its frequency is, (Given velocity of sound = 330 m/s)
	A.330 cycles per second
	B.3.3 kilo cycles per second
	C.30 mega-cycles per second
	D.305 cycles per second

Ans: 3.3 kilo cycles per second

Q7.	An observer moves towards a stationary source of sound with a velocity one-fifth of the velocity of sound. What is the percentage increase in the apparent freq ency?
	A.0.005
	B.zero
	C.0.2
	D.0.05

Ans: 0.2

Q8.	In the longitudinal waves the direction of vibration in medium of particle is
	A.Perpendicular to propagation of wave
	B.Parallel to propagation
	C.Different from each other
	D.Variable for time to time

Ans: Parallel to propagation

Q9.	Two identical straight wires are stretched so as to produce 6 beats per second when tension slightly in one of them, the beat frequency remains unchanged. Denoting by T1 and T2 the higher and lower initial tension in the strings, then it could be said that while making the above changes in tension
	A.T2 was decreased
	B.T2 was increased
	C.T1 was decreased
	D.Both (b) and (c)

Ans: Both (b) and (c)

Q10.	Two closed pipe produces 10 beats per second when emitting their fundamental nodes. If their lengths are in the ratio of 25 : 26 their fundamental frequency in Hz are
	A.270, 280
	B.260, 270
	C.260, 250
	D.240, 250

Ans: 260, 250

Q11.	A sonometer wire resonates with a given tuning fork forming standing waves with five antinodes between the two bridges when a mass of 9 kg is suspended from the wire. When this mass is replaced by mass M, the wire resonates with the same tuning fork forming three antinodes for the same positions of the bridges. The value of M is
	A.25 kg
	B.5 kg
	C.12.5 kg
	D.1 / 25 kg

Ans: 25 kg

Q12.	Four wires of identical lengths, diameters and material and stretched on a sonometer box. The ratio of their tension is 1 : 4 : 9 : 16. the ratio of their fundamental frequencies is
	A.1 : 6 : 9 : 16
	B.4 : 3 : 2 : 1
	C.1 : 2 : 3 : 4
	D.1 : 4 : 9 : 16

Ans: 1 : 2 : 3 : 4

Q13.	When two tuning forks (fork 1 and fork 2) are sounded simultaneously, 4 beats per second are heard. Now, some tape is attached on the prong of fork 2. When the tuning forks are sounded again, 6 beats per second are heard . If the frequency of fork 1 is 200 Hz, then what was the original freqency of fork 2?
	A.202 Hz
	B.200 Hz
	C.204 Hz
	D.196 Hz

Ans: 196 Hz

Q14.	A tuning fork of frequency 480 Hz is in unison with pipe closed at one end vibrating in its first overtone. Then fundamental frequency of the pipe is
	A.150 Hz
	B.160 Hz
	C.480 Hz
	D.190 Hz

Ans: 480 Hz

Q15.	The velocity of sound is maximum in
	A.Water
	B.Air
	C.Vacuum
	D.Metal

Ans: Metal

Q16.	The velocity of sound in any gas depends upon
	A.Wavelength of sound only
	B.Density and elasticity of ga
	C.Intensity of sound waves only
	D.Amplitude and frequency of sound

Ans: Density and elasticity of ga

Q17.	Two sounding bodies producing progressive wave given by y1 = 4 sin 400 pt and y2 = 4 sin 404 pt are situated very near to the ears of a person who will hear
	A.2 beats per second with intensity ratio (4/3) between maxima and minima
	B.2 beats per second with intensity ratio (49/1) between maxima and minima
	C.4 beats per second with intensity ratio (7/1) between maxima and minima
	D.4 beats per second with intensity ratio (4/3) between maxima and minima

Ans: 2 beats per second with intensity ratio (49/1) between maxima and minima

Q18.	In stationary waves
	A.Energy is uniformly distributed
	B.Energy is minimum at nodes and maximum at antinodes
	C.Energy is maximum at nodes and minimum at antinodes
	D.None of these

Ans: Energy is minimum at nodes and maximum at antinodes

Q19.	A pipe closed at one end vibrating in 5th overtone is in unison with open pipe vibrating in its 5th overtone. The ratio of lc : lo is.
	A.12:11
	B.1:1
	C.11:12
	D.5:1