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प्रश्न
Sonar makes use of :
विकल्प
infrasonic sound
ultrasound
ordinary sound
light
MCQ
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उत्तर
Sonar makes use of : ultrasound
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संबंधित प्रश्न
Complete the following sentences:
An average person can hear sound of frequencies in the range ______ to _________.
Complete the following sentence:
Infrasonic sound is of frequency ______________.
A man can hear the sound of frequency :
State four practical uses of ultrasonic vibrations.
Ultraviolet radiation has a wavelength of 300Å. If the velocity of the electromagnetic wave is 3 × 108 ms-1. Calculate:
- frequency
- time period.
Is the energy carried by the ultrasound very high or very low?
State the main components of a hearing aid.
State the properties of ultrasound that make it useful.
1 hertz is equal to
Bats produce ______ sound during screaming.
