Which has larger frequency - infrasonic ...

Which has larger frequency - infrasonic sound or ultrasonic sound?

Text Solution

Verified by Experts

1) Infrasonics are the sounds of frequency less than 20 Hz.
2) Ultrasonics are the sounds of frequency greater than 20 kHz.
3) Hence the ultrasonics have larger frequency.

Topper's Solved these Questions

SOUND
VGS PUBLICATION-BRILLIANT|Exercise APPLICATION TO DAILY LIFE, CONCERN TO BIODIVERSITY|3 Videos
SOUND
VGS PUBLICATION-BRILLIANT|Exercise TRY THESE|3 Videos
SOUND
VGS PUBLICATION-BRILLIANT|Exercise TRY THESE|3 Videos
REFRACTION OF LIGHT AT PLANE SURFACES
VGS PUBLICATION-BRILLIANT|Exercise EXERCISE|15 Videos
SUMMATIVE ASSESSMENT
VGS PUBLICATION-BRILLIANT|Exercise SUMMATIVE ASSESSMENT|2 Videos

The apparent frequency and real frequency of sound are the same (A) If source of sound and observer are moving in the same direction with same speed (B) If source of sound and observer are moving in the opposite direction with the same speed

A is true, B is false

A is false B is true

Both A & B are true

Both A & B are false

(A): When a source of sound passes us, whether it be a car horn or a train whistle, the pitch we hear goes from high to low. (R): According to Dopplers effect, there is apparent change in the frequency of sound observed due to relative motion between the observer and the source of sound.

Both 'A' and 'R' are true and 'R' is the correct, explanation of 'A'.

Both 'A' and 'R' are true and 'R' is not the correct explanation of 'A'

A' is true and 'R' is false

Both 'A' and 'R' are false

A source of frequency X' gives 5 beats/s when sounded with a source of frequency 200 Hz. The second harmonic of source gives 10 beats/s when sounded with a source of frequency 420 Hz. The value of 'x' is

200 Hz

210 Hz

205Hz

195 Hz