A lamp consumes of electrical energy in . What is its power?
Important Questions on Work and Energy
A donkey is carrying a load on its back.
Look at the activities listed below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A wind-mill is lifting water from a well.
Look at the activities listed below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A green plant is carrying out photosynthesis.
Look at the activities listed below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
An engine is pulling a train.
Look at the activities listed below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
Food grains are getting dried in the sun.
Look at the activities listed below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A sailboat is moving due to wind energy.
