Advertisements
Advertisements
प्रश्न
Complete the following sentence:
Bats can produce and hear ___________ sound.
रिक्त स्थान भरें
Advertisements
उत्तर
Bats can produce and hear ultrasonic sound.
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Complete the following sentence:
Elephants produce ____________sound.
Can you hear the sound produced due to vibrations of a seconds pendulum? Give reasons.
Sonar makes use of :
Name three animals which can hear ultrasonic vibrations.
State four practical uses of ultrasonic vibrations.
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.
What are ultrasonic?
What are infrasonic and ultrasonic sounds?
State the properties of ultrasound that make it useful.
