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

Describe briefly an experiment to prove that vibrating bodies produce sound.

Define mass.

State the unit in which mass is measured in C.GS. system.

State the unit in which mass is measured in S.I. system.

State or define the following term:

Solar day

State or define the following term:

Mean solar day

State or define the following term:

An hour

State or define the following term:

Minute

State or define the following term:

Second

State or define the following term:

Year

State the relation between the wavelength and the frequency.

What do you understand by the term order of magnitude of a quantity?

What kinds of waves are produced in solids, liquids, and gases?

Express the order of magnitude of the following quantity:

12578935 m

What is approximate value of the speed of sound in iron as compared to that in air? Illustrate your answer with a simple experiment.

Express the order of magnitude of the following quantity:

222444888 kg

Express the order of magnitude of the following quantity:

0.000,000,127 s

Express the order of magnitude of the following quantity:

0.000,000,000,00027 m

Amongst the various physical measurements recorded in an experiment, which physical measurement determines the degree of accuracy?