1.

Two waves represented by the following equations are travelling in the same medium \[{{y}_{1}}=5\sin 2\pi (75t-0.25x)\], \[{{y}_{2}}=10\sin 2\pi (150t-0.50x)\]            The intensity ratio \[{{I}_{1}}/{{I}_{2}}\] of the two waves is  [UPSEAT 2002]

A.            1 : 2                                          
B.            1 : 4
C.            1 : 8                                          
D.            1 : 16
Answer» C.            1 : 8                                          


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