The displacement of a particle is given by x=3sin(5πt)+4cos(5πt). The amplitude of the particle is :

(1) 3

(2) 4

(3) 5

(4) 7

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The two interfering waves have intensities in the ratio 9 : 4. The ratio of intensities of maxima and minima in the interference pattern will be :

(1) 1 : 25

(2) 25 : 1

(3) 9 : 4

(4) 4 : 9

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If the ratio of amplitude of two waves is 4 : 3. Then the ratio of maximum and minimum intensity will be :

(1) 16 : 18

(2) 18 : 16

(3) 49 : 1

(4) 1 : 49

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Equation of motion in the same direction is given by y1=Asin(ωtkx), y2=Asin(ωtkxθ). The amplitude of the medium particle will be 

(1) 2Acosθ2

(2) 2Acosθ

(3) 2Acosθ2

(4) 1.2f,1.2λ

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The displacement of the interfering light waves are y1=4sinωt and y2=3sinωt+π2. What is the amplitude of the resultant wave :

(1) 5

(2) 7

(3) 1

(4) 0

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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

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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

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Two tuning forks when sounded together produced 4 beats/sec. The frequency of one fork is 256. The number of beats heard increases when the fork of frequency 256 is loaded with wax. The frequency of the other fork is :

(1) 504

(2) 520

(3) 260

(4) 252

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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

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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

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