HSC Science (Computer Science) 11th Standard - Maharashtra State Board Question Bank Solutions for Physics

Answer in one sentence.

State the condition under which Hooke’s law holds good.

Long answer type question.

State Hooke’s law.

Choose the correct alternative.

Which of the following is an ohmic conductor?

Answer the following question.

Distinguish between Ohmic and non-ohmic substances; explain with the help of example.

Choose the correct option.

The EM wave emitted by the Sun and responsible for heating the Earth’s atmosphere due to greenhouse effect is

Choose the correct option.

Earth’s atmosphere is richest in

Choose the correct option.

How does the frequency of a beam of ultraviolet light change when it travels from air into glass?

Answer briefly.

Why are microwaves used in radar?

Answer briefly.

Can we produce a pure electric or magnetic wave in space? Why?

Answer briefly.

Does an ordinary electric lamp emit EM waves?

Answer briefly.

Why light waves travel in a vacuum whereas sound waves cannot?

What are the ultraviolet rays?

Answer briefly.

What are radio waves?

Answer briefly.

Give two uses of ultraviolet rays.

Answer briefly.

Give two uses of radio waves.

Answer briefly.

Name the most harmful radiation entering the Earth's atmosphere from outer space.

Answer briefly.

What is a carrier wave?

Answer briefly.

Why high-frequency carrier waves are used for the transmission of audio signals?

Solve the numerical problem.

Calculate the frequency in MHz of a radio wave of wavelength 250 m. Remember that the speed of all EM waves in a vacuum is 3.0 × 10⁸ m/s.

Solve the numerical problem.

Calculate the wavelength in nm of an X-ray wave of frequency 2.0 × 10¹⁸ Hz.