Waves and Oscillations Practice Questions
JEE · Physics · 1280 free MCQs with instant results and detailed explanations.
1280
Total
300
Easy
558
Medium
422
Hard
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Topics in Waves and Oscillations
SHM
216
Sound Waves
248
Wave Motion
255
Damped Oscillations
275
Superposition
286
Sample Questions from Waves and Oscillations
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
What is the maximum displacement of a particle in simple harmonic motion called?
A.
Amplitude
B.
Frequency
C.
Wavelength
D.
Period
Show Answer & Explanation
Correct Answer: A
The maximum displacement from the mean position in SHM is termed as amplitude.
Q2
Easy
In simple harmonic motion, the restoring force is directly proportional to which of the following?
A.
Displacement
B.
Velocity
C.
Acceleration
D.
Time
Show Answer & Explanation
Correct Answer: A
In SHM, the restoring force is proportional to the negative of displacement from the mean position.
Q3
Easy
If the amplitude of a simple harmonic oscillator is doubled, what happens to its total energy?
A.
It remains the same
B.
It doubles
C.
It quadruples
D.
It halves
Show Answer & Explanation
Correct Answer: C
The total energy in SHM is proportional to the square of the amplitude, so if the amplitude is doubled, energy increases by a factor of four.
Q4
Medium
A mass m is attached to a spring with spring constant k and is displaced by a distance x from its equilibrium position. What is the potential energy stored in the spring when the mass is at this displaced position?
A.
0.5 kx^2
B.
kx^2
C.
0.25 kx^2
D.
k * x
Show Answer & Explanation
Correct Answer: A
The potential energy (PE) stored in a spring is given by the formula PE = 1/2 kx^2, where k is the spring constant and x is the displacement from equilibrium.
Q5
Medium
A simple harmonic oscillator has a maximum displacement of 5 cm. What is the amplitude of the oscillation?
A.
5 cm
B.
10 cm
C.
2.5 cm
D.
0 cm
Show Answer & Explanation
Correct Answer: A
The amplitude of an oscillation is defined as the maximum displacement from the mean position, which is given as 5 cm.
Q6
Medium
A pendulum swings with a maximum angle of 10 degrees. Assuming small angle approximation, which of the following is closest to its frequency if the length of the pendulum is 1 m?
A.
0.5 Hz
B.
1 Hz
C.
1.5 Hz
D.
2 Hz
Show Answer & Explanation
Correct Answer: B
The frequency of a simple pendulum is given by f = 1/(2Ļ)ā(g/L). For g ā 9.81 m/sĀ² and L = 1 m, we find f ā 1 Hz.
Q7
Medium
In a mass-spring system undergoing SHM, if the mass is doubled, how does the frequency change?
A.
Increases by ā2
B.
Decreases by ā2
C.
Remains the same
D.
Increases by 2
Show Answer & Explanation
Correct Answer: B
The frequency of a mass-spring system is given by f = (1/2Ļ)ā(k/m). If m is doubled, f decreases by ā2.
Q8
Hard
A simple pendulum is oscillating with a small amplitude. If the length of the pendulum is increased by 4 times, what will be the new time period of oscillation?
A.
2T
B.
T
C.
4T
D.
ā4T
Show Answer & Explanation
Correct Answer: A
The time period T of a simple pendulum is given by T = 2Ļā(L/g). If L is increased by 4 times, the new time period T' = 2Ļā(4L/g) = 2T, indicating the time period doubles.
Q9
Hard
A tuning fork of frequency 440 Hz emits sound waves. If the speed of sound in air is 340 m/s, what is the wavelength of the sound waves produced?
A.
0.77 m
B.
0.64 m
C.
0.88 m
D.
1.00 m
Show Answer & Explanation
Correct Answer: A
The wavelength Ī» of a wave is given by Ī» = v/f. Here, v = 340 m/s and f = 440 Hz, so Ī» = 340/440 ā 0.77 m.
Q10
Hard
A mass-spring system oscillates with a frequency of 2 Hz. If the mass is doubled and the spring constant is unchanged, what will be the new frequency?
A.
1 Hz
B.
2 Hz
C.
4 Hz
D.
0.5 Hz
Show Answer & Explanation
Correct Answer: A
The frequency of a mass-spring system is given by f = (1/2Ļ)ā(k/m). When mass is doubled, frequency is reduced by ā2.
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Waves and Oscillations ā JEE Physics Practice Questions Online
This page contains 1280 practice MCQs for the chapter Waves and Oscillations in JEE Physics. The questions are organized by difficulty ā 300 easy, 558 medium, 422 hard ā so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 5 topics, giving you comprehensive coverage of the entire chapter.