SATHEE: Dual Nature Of Light Question 240

Dual Nature Of Light Question 240

Question: Photo cells are used for the

Options:

A) Reproduction of pictures from the cinema film

B) Reproduction of sound from the cinema film

C) Automatic switching of street light

D) (b) and (c) both

Show Answer

Answer:

Correct Answer: D

Solution:

Refer to the application of photo-cell.

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Dual Nature Of Light Question 240

Question: Photo cells are used for the

Options:

Answer:

Solution:

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