Advertisements
Advertisements
प्रश्न
Name the device or machine which convert :
Electrical energy into light energy.
Advertisements
उत्तर
An electric bulb converts electrical energy into light energy.
APPEARS IN
संबंधित प्रश्न
State the condition under which the mechanical energy is conserved.
What kind of energy is possessed by the following?
A running car ____________
What kind of energy is possessed by the following?
A stretched rubber band _____________
Name the device which converts electrical energy into mechanical energy.
Name the device or machine which convert :
Electrical energy into heat energy.
Name the device or machine which convert :
Light energy into electrical energy.
How much electrical energy in joules does a 100 watt lamp consume : in 1 minute?
Which of the following energy change involves frictional force?
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.
A girl with having a mass of 35 kg sits on a trolley of mass 5 kg. The trolley is given an initial velocity of 4 m s–1 by applying a force. The trolley comes to rest after traversing a distance of 16 m. (a) How much work is done on the trolley? (b) How much work is done by the girl?
