Advertisements
Advertisements
प्रश्न
A man can hear the sound of frequency :
विकल्प
1 Hz
1000 Hz
200 kHz
5 MHz
Advertisements
उत्तर
A man can hear the sound of frequency : 1000 Hz
APPEARS IN
संबंधित प्रश्न
Complete the following sentence:
Ultrasound is of frequency ___________.
Complete the following sentence:
Infrasonic sound is of frequency ______________.
Explain how do bats locate the obstacles and prey in their way.
State two applications of ultrasound.
The properties of ultrasound that make it useful are
What do you understand by the term ultrasonic vibrations?
What is Galton’s whistle? To what use is it put?
An electromagnetic wave has a time period of 4 × 10-8 s. Calculate its frequency in MHz.
Ultraviolet radiation has a wavelength of 300Å. If the velocity of the electromagnetic wave is 3 × 108 ms-1. Calculate:
- frequency
- time period.
Bats produce ______ sound during screaming.
