Q.

Period of oscillation of 3 cm microwaves in seconds is

A. 1 x 10¹⁰
B. 1 x 10⁻¹⁰
C. 0.01
D. 0.001
Answer» B. 1 x 10⁻¹⁰
Explanation: The period of oscillation of 3 cm microwaves is 1 x 10^-10 (Physics, Volume 1, by Halliday). The period of oscillation is the smallest interval of time in which a system undergoing oscillation returns to the state it was in at the beginning of the oscillation.
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