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Sounds waves and Motion MCQ question and answer with solution | Physics Gk MCQs

Learn Sounds waves and Motion MCQ Questions and answers with easy and logical explanations in Physics Gk . Sounds waves and Motion MCQ question provides all type of technical mcq questions which is important for SSC-CGL, UPPSC, NDA, CDS and all govt examinations

Each section contains 100 MCQs on Sounds waves and Motion .
1
Which of the following substances will have the lowest speed of sound?
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Answer & Solution
Answer: Option D
No explanation is given for this question. Let's Discuss on Board
2
What is the approximate range of sound for humans?
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Answer & Solution
Answer: Option C
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3
Loudness of sound depends upon which of the following?
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Answer & Solution
Answer: Option C
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4
Sonar is a device that uses ultrasonic waves to measure the distance, direction and speed of object . . . . . . . .
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Answer & Solution
Answer: Option D
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5
It is a quantity that does not describe the nature of a wave-
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Answer & Solution
Answer: Option A
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6
A person clapped near the rock and he was heard echo after 4 seconds. So what is the distance of the rock from the person?
(Speed of sound = 346m/s)
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Answer & Solution
Answer: Option C
Solution:
Let's break down this question step-by-step!

The key to understanding this problem is realizing that the sound has to travel to the rock AND back to the person for an echo to be heard.

We know the speed of sound is 346 meters per second.
We also know the total time for the sound to travel to the rock and back is 4 seconds.

To find the total distance the sound travels, we multiply the speed of sound by the total time: 346 m/s * 4 s = 1384 meters.

However, this 1384 meters is the distance to the rock AND back. We only want the distance to the rock.

Therefore, we need to divide the total distance by 2: 1384 meters / 2 = 692 meters.

So, the correct answer is Option C: 692 m. It represents the one-way distance from the person to the rock.
7
Echocardiogram is more closely related to?
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Answer & Solution
Answer: Option A
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8
With the propagation of a longitudinal wave through a material medium, the quantities transferred in the direction of propagation are
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Answer & Solution
Answer: Option A
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9
Which of the following statements is true? The velocity of sound is
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Answer & Solution
Answer: Option B
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10
A worker was working on the rail track. A boy at a distance holds his ear near the rail track. This boy was able to hear sound of the blow of workman twice. It is because of
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Answer & Solution
Answer: Option A
No explanation is given for this question. Let's Discuss on Board