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

Name the radiations of wavelength just shorter than 4 × 10^-7 m.

Name two electromagnetic waves of frequency smaller than that of violet light. State one use of each.

Give one use of microwaves.

Give one use of ultraviolet radiation.

Give one use of gamma rays.

Name the rays or waves  of highest frequency .

Name the waves used for taking photographs in dark.

Name the waves produced by the changes in the nucleus of an atom.

Name the waves of wavelength nearly 0.1 nm.

Two waves A and B have wavelength 0.01 Å and 9000 Å respectively.

1. Name the two waves.
2. Compare the speeds of these waves when they travel in vacuum.

Name two sources, each of infrared radiations and ultraviolet radiations.

What are ultraviolet radiations?

Name three properties of ultraviolet radiations which are similar to visible light.

An electromagnetic wave has a frequency of 500 MHz and a wavelength of 60 cm Calculate the velocity of the wave.

An electromagnetic wave has a frequency of 500 MHz and a wavelength of 60 cm.name the medium through which it is travelling

What is meant by an echo?

A man is standing at a distance of 12 m from a cliff. Will he be able to hear a clear echo of his sound? Give a reason for your answer.

The wavelength of X-rays is 0.01 Å. Calculate its frequency. State the assumption made, if any.

How does the resistance of a wire depend on its radius? Explain your answer. 

How does the resistance of a wire depend on its length? Give a reason for your answer.