HSC Science (Computer Science) ११ वीं कक्षा - 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.

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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.

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

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Earth’s atmosphere is richest in

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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?

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Does an ordinary electric lamp emit EM waves?

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

What are the ultraviolet rays?

Answer briefly.

What are radio waves?

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Give two uses of ultraviolet rays.

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Give two uses of radio waves.

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

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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.