Advertisements
Advertisements
प्रश्न
Name the energy transfers which occur when : there is a picture on a television screen
उत्तर
A television screen converts electrical energy into light energy and heat energy.
APPEARS IN
संबंधित प्रश्न
In what way does the temperature of water at the bottom of a waterfall differ from the temperature at the top? Explain the reason.
State the condition under which the mechanical energy is conserved.
A body falls freely under gravity from rest. Name the kind of energy it will possess while falling.
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.
Name the device or machine which convert :
Light energy into electrical energy.
Name the device or machine which convert :
Heat energy into kinetic energy (or mechanical energy).
Name the energy transfers which occur when : a torch is on
A ball falls to the ground as shown below :
What is the potential energy of ball at B?
Which one of the following is not the unit of energy?
Which of the following energy change involves frictional force?