HARD

11th ICSE

IMPORTANT

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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 $\frac{π}{2}$ ?

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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 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 :

HARD

11th ICSE

IMPORTANT

ISC Physics Class XI Part 1>Chapter 30 - Superposition of Waves-1 : Interference and Beats>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 10

When two tuning forks (fork

1

and fork

2

) are sounded simultaneously,

4

beats per second are heard. Now, some tape is attached on the prong of fork

2

. When the tuning forks are sounded again,

6

beats per second are heard. If the frequency of the fork 1 is 200 Hz., then original frequency of fork 2 is :

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 π2?

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

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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 $\frac{π}{2}$ ?