MEDIUM
9th CBSE
IMPORTANT
Earn 100

The sound waves travel fastest:

100% studentsanswered this correctly

Important Questions on Sound

MEDIUM
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 5 - Sound>Multiple Choice Questions (MCQs)>Q 77
The speeds of sound in four different media are given below. Which of the following is the most likely speed in m s-1 with which the two underwater whales in a sea talk to each other when separated by a large distance?
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 5 - Sound>Multiple Choice Questions (MCQs)>Q 78
When the pitch of the note produced by a harmonium is lowered, then the wavelength of the note:
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 5 - Sound>Multiple Choice Questions (MCQs)>Q 79
The velocities of sound waves in four media P, Q, R and S are 18,000 km/h, 900 km/h, 0 km/h, and 1200 km/h respectively. Which medium could be a liquid substance?
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 5 - Sound>Multiple Choice Questions (MCQs)>Q 80
Which of the following can produce longitudinal waves as well as transverse waves under different conditions?
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 5 - Sound>Questions Based on High Order Thinking Skills (HOTS)>Q 81
Draw the sketches of two waves A and B such that wave B has twice the wavelength and half the amplitude of wave A.
MEDIUM
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 5 - Sound>Questions Based on High Order Thinking Skills (HOTS)>Q 82
A device called oscillator is used to send waves along a stretched string. The string is 20 cm long, and four complete waves fit along its length when the oscillator vibrates 30 times per second. For the waves on the string, what is their wavelength?
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 5 - Sound>Questions Based on High Order Thinking Skills (HOTS)>Q 82

A device called oscillator is used to send waves along a stretched string. The string is 20 cm long and four complete waves fit along its length when the oscillator vibrates 30 times per second. For the waves on the string, what is their frequency?

MEDIUM
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 5 - Sound>Questions Based on High Order Thinking Skills (HOTS)>Q 82

A device called oscillator is used to send waves along a stretched string. The string is 20 cm long and four complete waves fit along its length when the oscillator vibrates 30 times per second. For the waves on the string, what is their speed?