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

What is the audible range of frequency?

Can we hear sounds of frequencies:
Less than 20 Hz

Can we hear sounds of frequencies:
More than 20 KHZ

Does audible range of frequency vary from person and also with the age of the person?

How are bats able to avoid obstacles in their way?

Do all animals have same ranges of audible frequencies?

Name the Sound of the Frequency Given Below:
2000 Hz

Name the Sound of the Frequency Given Below:
45 kHz

What do you mean by heat?

Is heat a form of energy?

Define one joule of heat.

What is the relation between joule and calorie?

Define temperature and write its SI unit.

Why does a piece of ice when touched with hands appear cold?

Distinguish between heat and temperature.

Two bodies at different temperatures are placed in contact with each other. State the direction in which heat flows.

Is it correct to say that heat is the cause of temperature?

What causes a change in the temperature of a body?

Which is more, a calorie or a joule?

1 joule = 4.2 calorie
Is this relation correct?