EASY

11th ICSE

IMPORTANT

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Two waves of equal amplitudes and wavelengths but differing in phases are superimposed. The amplitude of the resultant wave is maximum when phase difference is

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Important Questions on Superposition of Waves-1 : Interference and Beats

HARD

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 30 - Superposition of Waves-1 : Interference and Beats>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 2

Two waves of equal amplitudes and frequencies are superimposed at a point. What will be the ratio of intensities : when both the waves reach in the same phase and when both the waves reach with a phase difference of

\frac{π}{2}

HARD

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 30 - Superposition of Waves-1 : Interference and Beats>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 3

In Young's double slit experiment the intensity at a point where the path difference is

\frac{λ}{6}

I

. If

I_{0}

, denotes the maximum intensity,

\frac{I}{I_{0}}

is :

HARD

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 30 - Superposition of Waves-1 : Interference and Beats>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 4

Two periodic waves of intensities

I_{1}

and

I_{2}

pass through a region at the same time in the same direction. The sum of the maximum and minimum intensities is :

MEDIUM

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 30 - Superposition of Waves-1 : Interference and Beats>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 5

Two coherent monochromatic light beams of intensities

I

and

4 I

are superimposed. The maximum and minimum possible intensities in the resulting beam are :

HARD

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 30 - Superposition of Waves-1 : Interference and Beats>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 6

Two beams of light having intensities

I

and

4 I

interfere to produce a fringe pattern on a screen. The phase difference between the beams is

\frac{π}{2}

at point A and

π

at point B. Then, the difference between the resultant intensities at A and B is

HARD

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 30 - Superposition of Waves-1 : Interference and Beats>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 7

Two waves of lengths

50 cm

and

51 cm

respectively are moving with the same velocity and producing

12 beats s^{- 1}

. The velocity of the waves is :

HARD

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 30 - Superposition of Waves-1 : Interference and Beats>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 8

When two tuning forks A and B are sounded together,

x

beats per second are heard. The frequency of A is

n

. Now, when one prong of the fork B is loaded with a little wax, the number of beats per second decreases. The frequency of the fork B is :

HARD

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 30 - Superposition of Waves-1 : Interference and Beats>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 9

A source of unknown frequency produces

8

beats per second with a source of

250 Hz

and

12

beats per second with a source of

270 Hz

. The frequency

n

of the unknown source is :

Two waves of equal amplitudes and wavelengths but differing in phases are superimposed. The amplitude of the resultant wave is maximum when phase difference is

Important Questions on Superposition of Waves-1 : Interference and Beats

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