Question
If amplitude of waves at distance $\mathrm{r}$ from a point source is $A$, the amplitude at a distance $2 r$ will be [MP PMT $\left.198_{5}\right]$(a) $2 A$(b) $A$(c) $A / 2$(d) $A / 4$
Step 1
This relationship is given by $A \propto \frac{1}{r^2}$. Show more…
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From a point source, if amplitude of waves at a distance $r$ is $A$, its amplitude at a distance $2 r$ will be (a) $A$ (b) $2 A$ (c) $A / 2$ (d) $A / 4$
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Round 1
If amplitude of waves at distance r from a point source is A, the amplitude at a distance 2r will be (a) 2A (b) A (c) A/2 (d) A/4
"From a point source, if amplitude of waves at a distance r is A, its amplitude at a distance 2r will be (a) A (b) 2 A (c) A/2 (d) A/4"
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