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The electromagnetic waves detected using a thermopile and used in physical therapy

The electromagnetic waves detected using a thermopile and used in physical therapy are

Options

(a) gamma radiations
(b) x-rays
(c) ultraviolet radiations
(d) infrared radiations

Correct Answer:

infrared radiations

Explanation:

The electromagnetic waves detected using a thermopile and used in physical therapy are infrared radiations for treating muscular strain.

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