Physics - Wave on String Question with Solution | TestHub

PhysicsWave on StringEquation/graphEasy2 minPYQ_2024
PhysicsEasynumerical

A point source is emitting sound waves of intensity16×10-8 W m-2at the origin. The difference in intensity (magnitude only) at two points located at a distances of2 mand4 mfrom the origin respectively will be ________×10-8 W m-2.

Answer:
3.00
Solution:

Intensity for a point source varies as I1r2.

Intensity at a distance of 2 mI2=16×10-8×122=4×10-8 W m-2

Similarly, intensity at a distance of 4 mI4=16×10-8×142=1×10-8 W m-2

Required difference, I2-I4=3×10-8 W m-2

Stream:JEESubject:PhysicsTopic:Wave on StringSubtopic:Equation/graph
2mℹ️ Source: PYQ_2024

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