Advertisements
Advertisements
प्रश्न
Name the device or machine which convert :
Light energy into electrical energy.
Advertisements
उत्तर
A solar cell converts light energy into electrical 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 whether the object possess kinetic energy, potential energy, or both :
A flying aeroplane _______________.
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 __________.
A stone is thrown upwards as shown in the diagram. When it reaches P, which of the following has the greatest value of the stone?
Name the device or machine which convert :
Electrical energy into sound energy.
What do you understand by the term 'transformation of energy"? Explain with an example.
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 : there is a picture on a television screen
A ball falls to the ground as shown below :
What is the potential energy of ball at B?
An automobile engine propels a 1000 kg car (A) along a levelled road at a speed of 36 km h–1. Find the power if the opposing frictional force is 100 N. Now, suppose after travelling a distance of 200 m, this car collides with another stationary car (B) of the same mass and comes to rest. Let its engine also stop at the same time. Now the car (B) starts moving on the same level road without getting its engine started. Find the speed of the car (B) just after the collision.
