The apparent frequency in Doppler’s effect does not depend upon ___________

Distance between the observer and source

Statement: When two vibration tuning forks having frequencies 256Hz and 512Hz are held near each other, beats cannot be heard.

Reason: The principle of superposition is valid if the frequencies of the oscillators are nearly equal.

Both statement and reason are true and the reason is the correct explanation of the statement

Both statement and reason are true but the reason is not the correct explanation of the statement

Statement is true but the reason is false

Both statement and reason are false

Statement: When a beetle moves along the sand within a few tens of centimetres of a sand scorpion, the scorpion immediately turns towards the beetle and dashes towards it.

Reason: When a beetle disturbs the sand, it sends pulses is longitudinal, while the other set in transverse.

Both statement and reason are true and the reason is the correct explanation of the statement

Both statement and reason are true but the reason is not the correct explanation of the statement

Statement is true but the reason is false

Both statement and reason are false

Statement: Ocean waves hitting a beach are always found to be nearly normal to the shore.

Reason: Once waves hitting a beach are assumed to be plane waves.

Both statement and reason are true and the reason is the correct explanation of the statement

Both statement and reason are true but the reason is not the correct explanation of the statement

Statement is true but the reason is false

Both statement and reason are false

Explore topic-wise MCQs in Engineering Physics Questions and Answers.

This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.	The apparent frequency in Doppler’s effect does not depend upon ___________
A.	Speed of the observer
B.	Distance between the observer and source
C.	Speed of the source
D.	Frequency of the source
Answer» C. Speed of the source

Discussion

2.	A vehicle, with a horn of frequency n is moving with a velocity of 30m/s in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency n+n1. Then (if the sound velocity in air is 300m/s)
A.	n1=0.1n
B.	n1=0
C.	n1=10n
D.	n1=-0.1n
Answer» C. n1=10n

Discussion

3.	Statement: When two vibration tuning forks having frequencies 256Hz and 512Hz are held near each other, beats cannot be heard.
A.	Reason: The principle of superposition is valid if the frequencies of the oscillators are nearly equal.
B.	Both statement and reason are true and the reason is the correct explanation of the statement
C.	Both statement and reason are true but the reason is not the correct explanation of the statement
D.	Statement is true but the reason is false
E.	Both statement and reason are false
Answer» D. Statement is true but the reason is false

Discussion

4.	Statement: When a beetle moves along the sand within a few tens of centimetres of a sand scorpion, the scorpion immediately turns towards the beetle and dashes towards it.
A.	Reason: When a beetle disturbs the sand, it sends pulses is longitudinal, while the other set in transverse.
B.	Both statement and reason are true and the reason is the correct explanation of the statement
C.	Both statement and reason are true but the reason is not the correct explanation of the statement
D.	Statement is true but the reason is false
E.	Both statement and reason are false
Answer» B. Both statement and reason are true and the reason is the correct explanation of the statement

Discussion

5.	Statement: Ocean waves hitting a beach are always found to be nearly normal to the shore.
A.	Reason: Once waves hitting a beach are assumed to be plane waves.
B.	Both statement and reason are true and the reason is the correct explanation of the statement
C.	Both statement and reason are true but the reason is not the correct explanation of the statement
D.	Statement is true but the reason is false
E.	Both statement and reason are false
Answer» B. Both statement and reason are true and the reason is the correct explanation of the statement

Discussion

Explore topic-wise MCQs in Engineering Physics Questions and Answers.

The apparent frequency in Doppler’s effect does not depend upon ___________

A vehicle, with a horn of frequency n is moving with a velocity of 30m/s in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency n+n1. Then (if the sound velocity in air is 300m/s)

Statement: When two vibration tuning forks having frequencies 256Hz and 512Hz are held near each other, beats cannot be heard.

Statement: When a beetle moves along the sand within a few tens of centimetres of a sand scorpion, the scorpion immediately turns towards the beetle and dashes towards it.

Statement: Ocean waves hitting a beach are always found to be nearly normal to the shore.