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Signal from a remote control to the devi...

Signal from a remote control to the device operated by it travels with the speed of

A

light

B

sound

C

ultrasonics

D

supersonics

Text Solution

Verified by Experts

The correct Answer is:
A
In case of a concave mirror, when u decreases from `oo` to f, v increases from f to `oo`. The graph will be like a rectangular hyperbola as `u prop 1/v`, which is of the form `y prop 1/x`. It is correctly shown in (c).
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