Question
Define the following terms :Infrasonic sound
✓
Answer
He sound waves, having frequencies below 20Hz are called infrasonic sounds. Human beings can not hear an infrasonic sound. Animals like elephants produce rumbling sounds of low frequency (14Hz).
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Find the mass of $50 \ cm3$ of silver if its density is $10.5 g \ cm^{-3}.$
→The diagram in fig. shows an incident ray AO and the normal ON on a plane mirror. Draw the reflected ray. State the law you use to draw the direction of the reflected ray.
The figure given below shows the distance travelled by 2 bodies in certain time. What will you conclude from this figure?
The density of copper is $8.9 g cm^{-3}$. What will be its density in $kg m^{-3} ?$
→Name two factors on which the strength of magnetic field of an electromagnet depends ?
How can we compare the fastness or slowness of two moving objects?
Explain why water stored in a dam has potential energy.
Define one ampere.
What do you mean by reflection of sound?
What do you mean by thermal expansion?