Q.

Two waves are represented by y1=asinω t+π6 and y2=acosω t. What will be their resultant amplitude

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a

a

b

2a

c

3a

d

2a

answer is C.

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Detailed Solution

A=(a12+a22+2a1a2cosφ)Putting a1=a2=a and φ=π3, we get A=3a
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