Explore Exams
Login Signup
Sign in Open App
RRB Group D / RPF Constable Exam  >  RRB Group D / RPF Constable Test  >  General Science for Competitive Exams  >  HOTS Questions: Sound - RRB Group D / RPF Constable MCQ

HOTS Questions: Sound for RRB Group D / RPF Constable General Science


MCQ Practice Test & Solutions: HOTS Questions: Sound (25 Questions)

You can prepare effectively for RRB Group D / RPF Constable General Science for Competitive Exams with this dedicated MCQ Practice Test (available with solutions) on the important topic of "HOTS Questions: Sound ". These 25 questions have been designed by the experts with the latest curriculum of RRB Group D / RPF Constable 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 25 minutes
  • - Number of Questions: 25

Sign up on EduRev for free to attempt this test and track your preparation progress.

HOTS Questions: Sound - Question 1
Save

The crest and trough are the parts of ____ wave.

Detailed Solution: Question 1

The upward movement from mean position is called crest and downward movement is called troughs. The crest and trough are the parts of a transverse wave. The wavelength of the wave is a combination of the crest and trough. 

HOTS Questions: Sound - Question 2
Save

Statement A: Speed of sound is same at different temperature 
Statement B: Loudness is measured in decibels. 
Which of the two statements is true?

Detailed Solution: Question 2

Speed of sound is different at different temperature. with increase in temperature, speed of sound increases. Loudness of sound is measured in decibels.

Clear all your doubts with EduRev
HOTS Questions: Sound - Question 3
Save

Match the following with correct response.

 

Detailed Solution: Question 3

Speed of sound in aluminum = 6420 m /s
Speed of sound in water = 1520 m /s 
Speed of sound in air at 25° C = 347 m/s
Speed of sound in oxygen gas = 328 m/s

HOTS Questions: Sound - Question 4
Save

Principle of reflection of sound is used in

Detailed Solution: Question 4

The principle of reflection of sound is used in megaphone, sound boards and stethoscope and other instruments.

HOTS Questions: Sound - Question 5
Save

X – rays, light rays are electromagnetic waves is a

Detailed Solution: Question 5

X-rays and light rays are indeed electromagnetic waves. These waves consist of oscillating electric and magnetic fields and do not require a material medium for propagation, allowing them to travel through a vacuum. The initial solution incorrectly referred to them as electrostatic waves, which is inaccurate since they are dynamic electromagnetic waves.

HOTS Questions: Sound - Question 6
Save

Frequency of infrasonic waves is ____________ than frequency of ultrasound waves.

Detailed Solution: Question 6

Frequency of infrasonic waves is less than frequency of ultrasound waves. Frequency of infrasonic waves are less than 20Hz and frequency of ultrasonic waves are greater than 20,000Hz.

HOTS Questions: Sound - Question 7
Save

“Due to the high power of ultrasound waves. It is used for breaking and cutting objects” The above statement is

Detailed Solution: Question 7

Ultrasound waves vibrate at frequency higher than 20,000Hz. Vibration at such a high speed can be used to breaking and cutting objects like stone in kidney.

HOTS Questions: Sound - Question 8
Save

Match the following with correct response. 

Detailed Solution: Question 8

The correct option is B.

Echo -  the repetition of a sound caused by reflection of sound waves.

A reverberation, or reverb, is created when a sound or signal is reflected causing numerous reflections to build up and then decay as the sound is absorbed by the surfaces of objects in the space – which could include furniture, people, and air. 

Sonar is a technique that uses sound propagation to navigate, communicate with or detect objects on or under the surface of the water, such as other vessels. 

The concave surface of the sound board reflects the sound waves of the speaker towards the audience and hence prevents the spreading of sound in various directions. Due to this, sound is distributed uniformly throughout the hall and even the persons sitting at the back of the hall can hear the speech easily.

HOTS Questions: Sound - Question 9
Save

Sound wave is a

Detailed Solution: Question 9

Sound wave propagates as compressions & rarefactions in the medium. Sound waves are longitudinal waves.

HOTS Questions: Sound - Question 10
Save

The upper limit of frequency of sound waves audible to human beings are

Detailed Solution: Question 10

The range of hearing of normal human being is form 20 Hz to 20,000Hz. This range is called as audible range of human beings.
upper limit means the higher value

HOTS Questions: Sound - Question 11
Save

Statement A: Human beings are ultrasound deaf 
Statement B: Ultrasonic waves can travel easily in solid, liquid and gases. 
Which of the two statements is true?

Detailed Solution: Question 11

both A and B

Explanation:

  • Statement A: Human beings are ultrasound deaf – This is true. Humans can hear sounds in the frequency range of approximately 20 Hz to 20,000 Hz. Ultrasound refers to sound waves with frequencies higher than 20,000 Hz, which are beyond the hearing range of humans.

  • Statement B: Ultrasonic waves can travel easily in solid, liquid, and gases – This is also true. Ultrasonic waves can propagate through all three states of matter (solid, liquid, and gas), although their speed and behavior differ in each medium. They typically travel faster in solids compared to liquids and gases.

HOTS Questions: Sound - Question 12
Save

Match the following with correct response. 

Detailed Solution: Question 12

  • Audible range - (D) 20 Hz to 20,000 Hz
    The audible range refers to the range of frequencies that the human ear can perceive. This range is typically between 20 Hz and 20,000 Hz.

  • Infrasonic - (A) Less than 20 Hz
    Infrasonic refers to sound waves with frequencies lower than 20 Hz, which are below the human audible range.

  • Ultrasonic - (C) More than 20,000 Hz
    Ultrasonic refers to sound waves with frequencies higher than 20,000 Hz, which are above the human audible range.

  • Supersonic - (B) Speed greater than sound in air
    Supersonic refers to speeds that exceed the speed of sound in air (approximately 343 meters per second at room temperature).

HOTS Questions: Sound - Question 13
Save

The maximum displacement of the particle of the mean from its mean position is called the

Detailed Solution: Question 13

The maximum displacement from the particle of the mean position is called the Amplitude. Loudness of sound depends upon amplitude.

HOTS Questions: Sound - Question 14
Save

The distance between a consecutive crest and trough is x. The wavelength of the wave is

Detailed Solution: Question 14

The wavelength is the distance between two consecutive crest or trough in case of transverse wave. Here, distance between consecutive crest and trough is x, so, wavelength will be 2x.

HOTS Questions: Sound - Question 15
Save

Match the following with correct response. 

Detailed Solution: Question 15

  • Laws of reflection of sound - (D) Angle of reflection is equal to angle of incidence
    This is the basic principle of the laws of reflection, stating that the angle at which sound is incident on a surface is equal to the angle at which it is reflected.

  • An application of multiple reflection of sound - (A) Megaphone
    A megaphone works on the principle of multiple reflection of sound to amplify the sound in a specific direction.

  • Ultrasound - (C) To monitor foetus inside mother’s womb
    Ultrasound is used in medical diagnostics, including monitoring the fetus inside a mother's womb.

  • SONAR - (B) Measures depth of the sea
    SONAR (Sound Navigation and Ranging) is used to measure the depth of the sea by emitting sound waves and analyzing their reflections. 

HOTS Questions: Sound - Question 16
Save

An echo is heard when-
A. Minimum distance is 17m 
B. Minimum time gap between two sounds is 1/10th of second 
C. Minimum distance is 18m
D. Minimum time gap between two sounds is 1/100th of second 

Detailed Solution: Question 16

Two conditions for echo to be heard are as follows:-

  1. 17 m minimum distance should be there.
  2. Persistence of hearing is 0.1 secor minimum time gap between two sounds is 1/10 second.
     

HOTS Questions: Sound - Question 17
Save

Which wave property determines loudness?

Detailed Solution: Question 17

Loudness of sound depends upon amplitude. Amplitude is the maximum displacement from mean position.

HOTS Questions: Sound - Question 18
Save

Children can hear sound of frequency up to

Detailed Solution: Question 18

Children can typically hear sounds up to a frequency of 20,000Hz. This is the upper limit for most young people.

  • As people age, their ability to hear high frequencies often decreases.
  • The range of human hearing is usually from 20Hz to 20,000Hz.
  • Hearing ability can vary between individuals and is often tested using hearing tests.

HOTS Questions: Sound - Question 19
Save

Which animals produce ultrasound?
a. Tortoise
b. Bats 
c. Dolphins 
d. Dogs

Detailed Solution: Question 19

  • Bats and Dolphins produce and use ultrasound for echolocation and navigation.
  • Tortoises also produce sound, but it's typically in the lower frequency range, not ultrasound.
  • Dogs have a better hearing range than humans but do not produce ultrasound.
    Therefore, Correct Answer - Option D

HOTS Questions: Sound - Question 20
Save

The eardrum is a

Detailed Solution: Question 20

The eardrum is a stretched membranous structure at the junction of outer ear and middle ear. Vibration of eardrum causes production of sound that we hear.

HOTS Questions: Sound - Question 21
Save

A source produces 20 crests and 20 troughs in 0.2 second. Find the frequency of the wave.

Detailed Solution: Question 21

There are 20 crests and 20 trough in 0.2s, which implies 20 waves.

And if there are 20 crests and 20 trough, this mean that there are 20 waves in 0.2s

∴ Frequency= Number of waves/ Time taken

=20/0.2=200/2 = 100Hz

∴ν = 100Hz

Option (C) is the correct answer.

HOTS Questions: Sound - Question 22
Save

A wave moves a distance of 10m in 0.05 second. Find the wavelength of the wave if frequency is 200Hz?

Detailed Solution: Question 22

Speed = distance/time, 10m/0.05s = 200m/s. wavelength = wave speed / frequency = 200 ms−1/200Hz = 1m.

HOTS Questions: Sound - Question 23
Save

A bat hears the echo of its squeak after 0.1 second. How far is the obstacle from the bat? Speed of sound is 344 m/s.

Detailed Solution: Question 23

Speed of sound = 344m/s. time taken to hear echo = 0.1s. 2×distance0.1s. 2×distance = speed×time. 2×d =344×0.1 = 34.4 m. d = 17.2m.

HOTS Questions: Sound - Question 24
Save

Cochlea, semicircular canals and the auditory nerve are associated with

Detailed Solution: Question 24

Cochlea, semicircular canals and auditory nerve are associated with inner ear.

HOTS Questions: Sound - Question 25
Save

“Wave motion shifts mass from one region to another” The above statement is

Detailed Solution: Question 25

Wave motion shifts wave energy from one region to another region. Mass is not transferred during wave motion.

356 docs|169 tests
Join Course
Information about HOTS Questions: Sound Page
In this test you can find the Exam questions for HOTS Questions: Sound solved & explained in the simplest way possible. Besides giving Questions and answers for HOTS Questions: Sound , EduRev gives you an ample number of Online tests for practice
356 docs|169 tests
Join Course
Download as PDF

About this RRB Group D / RPF Constable Practice Test

This test contains 25 MCQs on HOTS Questions: Sound with detailed solutions for each question. It is part of the General Science for Competitive Exams course on EduRev, designed to align with the current RRB Group D / RPF Constable syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

Explore more RRB Group D / RPF Constable Study Resources

If you found this HOTS Questions: Sound MCQ Test helpful, you can further enhance your RRB Group D / RPF Constable preparation with in-depth courses on EduRev, for all the subjects and topics available in General Science for Competitive Exams course. The course offers:
  • Video Lectures: covering all the topics of General Science for Competitive Exams
  • Notes for Revision: offering revision notes, important questions, summaries, flashcards, cheatsheets & more for RRB Group D / RPF Constable preparation
  • MCQ Test: variety of questions as per the pattern of RRB Group D / RPF Constable exam
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Continue with Google
Takes less than 10 seconds to signup