Concept explainers
Interpretation:
The frequency of cosmic rays having a wavelength of
Concept introduction:
The wavelength of a light is defined as the distance between two consecutive crest and trough in the wave. The
Formula used:
Where, E represents the energy of the light, h represents the Plank’s constant, c is the speed of the light, λ is the

Answer to Problem 1STP
The correct option is D.
Explanation of Solution
To determine the frequency of the cosmic rays, divide the speed of light by wavelength.
Hence, the frequency of the cosmic rays is
The frequency of the cosmic rays is
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