fill in the blanks.

Question 11 Mark

________ produces a sensation in ears.

Answer

Sound produces sensation in ears.

Question 21 Mark

The sound heard after reflection is _______

Answer

The sound heard after reflection is echo.

Question 31 Mark

Sound travels faster in ________ than in liquids.

Answer

Sound travels faster in solids than in liquids.

Question 41 Mark

Sound requires a ________ for propagation.

Answer

Sound requires a medium for propagation.

Question 51 Mark

We can hear sounds of frequency in the range of _______

Answer

We can hear sounds of frequency in the range of 20 Hz to 20,000 Hz.

Question 61 Mark

Sound can travel in a ______

Answer

Sound can travel in a medium solid, liquid or gas.

Question 71 Mark

The pitch of a sound depends on its ________.

Answer

The pitch of a sound depends on its frequency.

Question 81 Mark

The number of times a body vibrates in one second is called its ______.

Answer

The number of times a body vibrates in one second is called its frequency.

Question 91 Mark

Sound is produced when a body ______.

Answer

Sound is produced when a body vibrates.

PHYSICS fill in the blanks.