Class 12

32. Communication System question bank (Physics)

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Q1.

$A$ signal emitted by an antenna from a certain point can be received at another point on the Earth's surface in the form of:

(A)
Sky wave
(B)
Ground wave
(C)
Sea wave
(D)
Both $(a)$ and $(b)$
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Q2.

For which of the following $AM$ waves is the modulation index equal to $1$?

(A)
opt-fig
(B)
opt-fig
(C)
opt-fig
(D)
opt-fig
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