(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

Define contact forces.

A coolie, with a load of 30 kg on his head, walks on the platform. If he walks a distance of 60 m, what is the work done by him?

Under what condition will a set of gears produce a gain in speed 

Define Translational motion.

In the following case write yes, if the work is being done and no if no work is being done.

A coolie standing with a heavy load on his head

In the following case write yes, if the work is being done and no if no work is being done.

A boy climbing up a staircase.

Is power a scalar or a vector quantity?

Can two agents, doing the same work, have different power?

State the amount of work done by an object when it moves in a circular path for one complete rotation. Give a reason to justify your answer.

Why is less effort needed to lift a load over an inclined plane as compared to lifting the load directly?

In what way does an ‘Ideal machine’ differ from a ‘Practical machine’?

State larger units of power.

What do you understand by the term energy? Is energy a scalar or vector? How is the energy possessed by a body measured?

A man climbs a slope and another walks same distance on level road. Which of the two expends more energy and why?

Name the material commonly used for the manufacturing of solar cells.

Name two places in India where electricity is generated from nuclear power plants.

What should be the characteristic of a source of energy?

Explain, why submarines are able to dive underwater as well as a sail on the surface of the water?

Give two examples each of contact and non-contact forces.

What is the difference between renewable and non-renewable resources?