Gamma Question Bank for Medical Physics>Chapter 23 - Electromagnetic Waves>Assignment>Q 7

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In free space, the ratio of magnitude of electric field to that of magnetic field of a plane electromagnetic wave is .

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Important Questions on Electromagnetic Waves

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Gamma Question Bank for Medical Physics>Chapter 23 - Electromagnetic Waves>Assignment>Q 8

A capacitor of capacitance

C

, is being charged up by connecting it across a d.c. voltage source of voltage

V

. How do the conduction and displacement currents, in this set up compare with each other
(i) During the charging up process?
(ii) After the capacitor gets fully charged?

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Gamma Question Bank for Medical Physics>Chapter 23 - Electromagnetic Waves>Assignment>Q 9

The velocity of propagation (in vacuum) and the frequency of (i)

x

-rays and (ii) radio waves are denoted by,

(v_{x}, f_{x})

and

(v_{R}, f_{R})

respectively. How are these values related to each other?

(i)

v_{x}

and

v_{R}

(ii)

f_{x}

and

f_{R}

Compare with each other.

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Gamma Question Bank for Medical Physics>Chapter 23 - Electromagnetic Waves>Assignment>Q 10

Let the wavelengths of electromagnetic waves used quite often for
(i) Killing germs in household water purifiers.
(ii) Remote sensing.
(iii) Treatment of cancer.
be labelled as

λ_{1}, λ_{2}

and

λ_{3}

. Arrange

λ_{1}, λ_{2}

and

λ_{3}

in increasing order.

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Gamma Question Bank for Medical Physics>Chapter 23 - Electromagnetic Waves>Assignment>Q 11

Name the part of the electromagnetic spectrum of wavelength

10^{- 2} m

and mention its one application.

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Gamma Question Bank for Medical Physics>Chapter 23 - Electromagnetic Waves>Assignment>Q 13

If you find closed loop of

\vec{B}

in a region in space, does it necessarily mean that actual charges are flowing across the area bounded by the loops?

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Gamma Question Bank for Medical Physics>Chapter 23 - Electromagnetic Waves>Assignment>Q 14

Give difference between displacement current and conduction current.

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Gamma Question Bank for Medical Physics>Chapter 23 - Electromagnetic Waves>Assignment>Q 15

Is displacement current, like conduction current, a source of magnetic field?