Determine the frequency of ultra-violet light that has an energy of 2.39×10−18 J

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To determine the frequency of the ultra-violet light, we can use the formula of the energy of a photon, which is given by:

E = h * f

where: E is the energy of the photon, h is Planck's constant (6.62607015 × 10^-34 m^2 kg / s), f is the frequency of the light.

We can rearrange the formula to solve for f:

f = E / h

Substituting the given values:

f = 2.39×10^-18 J / 6.62607015 × 10^-34 m^2 kg / s

After performing the division, we get:

f ≈ 3.61 × 10^15 Hz

So, the frequency of the ultra-violet light that has an energy of 2.39×10^-18 J is approximately 3.61 × 10^15 Hz.

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