Two waves are represented by y1=asinωt+π6 and y2=acosωt. What will be their resultant amplitude :

(1) a

(2) 2a

(3) 3a

(4) 2a

Subtopic:  Wave Motion |
 69%
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The amplitude of a wave represented by displacement equation y=1asinωt±1bcosωt will be

(1) a+bab

(2) a+bab

(3) a±bab

(4) a+bab

Subtopic:  Wave Motion |
 76%
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Two tuning forks when sounded together produced 4 beats/sec. The frequency of one fork is 256 Hz. The number of beats heard increases when the fork of frequency 256 Hz is loaded with wax. The frequency of the other fork is(in Hz) :

(1) 504

(2) 520

(3) 260

(4) 252

Subtopic:  Beats |
 65%
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A tuning fork sounded together with a tuning fork of frequency 256 Hz emits two beats. On loading the tuning fork of frequency 256 Hz with wax, the number of beats heard are 1 per second. The frequency of the other tuning fork is :

(1) 257

(2) 258

(3) 256

(4) 254

Subtopic:  Beats |
 66%
From NCERT
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If two tuning forks A and B are sounded together, they produce 4 beats per second. A is then slightly loaded with wax, they produce 2 beats when sounded again. The frequency of A is 256. The frequency of B will be :

(1) 250

(2) 252

(3) 260

(4) 262

Subtopic:  Beats |
 76%
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Two tuning forks have frequencies 450 Hz and 454 Hz respectively. On sounding these forks together, the time interval between successive maximum intensities will be :

(1) 1/4 sec

(2) 1/2 sec

(3) 1 sec

(4) 2 sec

Subtopic:  Beats |
 82%
From NCERT
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When a tuning fork of frequency 341 is sounded with another tuning fork, six beats per second are heard. When the second tuning fork is loaded with wax and sounded with the first tuning fork, the number of beats is two per second. The natural frequency of the second tuning fork is :

1. 334

2. 339

3. 343

4. 347

Subtopic:  Beats |
 76%
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Tuning fork \(F_1\) has a frequency of 256 Hz and it is observed to produce 6 beats/second with another tuning fork \(F_2\). When \(F_2\) is loaded with wax, it still produces 6 beats/second with \(F_1\). The frequency of \(F_2\) before loading was:
1. 253 Hz
2. 262 Hz
3. 250 Hz
4. 259 Hz

Subtopic:  Beats |
 70%
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Two tuning forks, A and B, vibrating simultaneously produce 5 beats. The frequency of B is 512 Hz. It is seen that if one arm of A is filed a little, then the number of beats increases. The frequency of A in Hz will be:

1. 502 2. 507
3. 517 4. 522
Subtopic:  Beats |
 70%
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Beats are produced by two waves given by y1=asin2000πt and y2=asin2008πt. The number of beats heard per second is :

(1) Zero

(2) One

(3) Four

(4) Eight

Subtopic:  Beats |
 82%
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