(English Medium) ICSE Class 9 - CISCE Question Bank Solutions for Physics

Explain the following:
Conduction is not possible in vacuum.

Explain the following:
Why is the cooling in a refrigerator kept near the top?

Explain the following:
It is cool in the shade, when it is hot outside.

The following figure shows a rectangular box with two tubes P and Q at the top. A burning candle R is placed under the tube P. The candle burns brightly.

Explain:

(i) How is the air in the box circulating?
(ii) What will happen if the opening Q is closed?

The following figure shows a container in which a lighted candle has been kept. The container has two openings, p, and Q. Which way the smoke from an external source placed near P moves when it reaches P and leaves from Q. Give a reason for your answer.

Define displacement. State its unit.

Differentiate between distance and displacement.

Can displacement be zero even if the distance is not zero? Give one example to explain your answer.

When is the magnitude of displacement equal to the distance?

A body when projected up with an initial velocity u goes to a maximum height h in time t and then comes back at the point of projection. The correct statement is ______________

A train takes 3 h to travel from Agra to Delhi with a uniform speed of 65 km h^-1. Find the distance between the two cities.

What information about the motion of a body are obtained from the displacement-time graph?

Can displacement-time sketch be parallel to the displacement axis? Give a reason to your answer.

State how the velocity-time graph can be used to find The distance travelled by the body in a given time

State how the velocity-time graph can be used to find The displacement of the body in a given time.