Advertisements
Advertisements
प्रश्न
Name the energy transfers which occur when : there is a picture on a television screen
Advertisements
उत्तर
A television screen converts electrical energy into light energy and heat energy.
APPEARS IN
संबंधित प्रश्न
State the condition under which the mechanical energy is conserved.
Fill in the blank with suitable word :
The ability of a body to do work is called __________. The ability of a body to do work because of its motion is called __________.
Define the term 'energy' of a body. What is the SI unit of energy.
What are the various forms of energy?
Name the device or machine which convert :
Chemical energy into kinetic energy (or mechanical energy).
Name the device or machine which convert :
light energy into heat energy.
Fill in the blank with suitable word:
The electricity meter installed in our homes measure electrical energy in the units of ___________.
What kind of energy transformations take place at a coal-based thermal power station?
The hanging bob of a simple pendulum is displaced to one extreme position B and then released. It swings towards centre position A and then to the other extreme position C. In which position does the bob have :
(i) maximum potential energy?
(ii) maximum kinetic energy?
A body of mass 10 kg at rest is acted upon simultaneously by two forces 4 N and 3 N at right angles to each other. The kinetic energy of the body at the end of 10 s is
