Advertisements
Advertisements
प्रश्न
A microphone converts :
विकल्प
electrical energy into sound energy in ordinary telephone
microwave energy into sound energy in a mobile phone
sound energy into mechanical energy is a stereo system
sound energy into electrical energy in public address system
Advertisements
उत्तर
A microphone converts sound energy into electrical energy in public address systems.
Therefore, the answer is, (d) Sound energy into electrical energy in public address system.
APPEARS IN
संबंधित प्रश्न
A ball of mass 0.20 kg is thrown vertically upwards with an initial velocity of 20 m s-1. Calculate the maximum potential energy it gains as it goes up.
Water stored in a dam possesses ______.
Name the device or machine which convert :
Chemical energy into heat energy.
How much electrical energy in joules does a 100 watt lamp consume : in 1 second?
Write the energy transformations which take place in an electric bulb (or electric lamp).
Explain the transformation of energy in the following cases :
(i) A ball thrown upwards.
(ii) A stone dropped from the roof of a building.
How much electric energy in kWh is consumed by an electrical appliance of 1000 watts when it is switched on for 60 minutes?
Name the energy transfers which occur when an electric ball rings.
A ball falls to the ground as shown below :
Which law you have made use of in answering this question?
When an object falls freely towards the earth, then its total energy :
