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3 years ago

If the frequency of oscillation of the wave emitted by an fm radio station is 92.4 mhz, determine the wave's period of vibration

1 answer:

3 0

The basic relationship between the frequency of a wave and its period is
$f= \frac{1}{T}$
where f is the frequency and T the period of vibration.

In our problem, the frequency is
$f=92.4 MHz = 92.4 \cdot 10^6 Hz$
so, by re-arranging the previous formula, we can find the period of the wave:
$T= \frac{1}{f}= \frac{1}{92.4 \cdot 10^6 Hz}=1.1 \cdot 10^{-8} s$

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Answer:

371.2 mm

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The Balmer series of spectral lines is obtained from the formula

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1/λ = 1.097 × 10⁷ m⁻¹(1/2² -1/15²)

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λ = 1/2.693 10⁶ m⁻¹

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