Answer:
(3) 5.10x[tex]10^{-19} J[/tex]
Explanation:
If you already know the frequency, the energy of photon can be calculated by using the formula :
E=hf
where,
E= energy of photon
f= frequency of the photon in Hz= 7.69 × 10^14 hertz
h=Planck's constant = 6.63 × 10-34 J s
therefore, E= (6.63 × 10^-34 )*(7.69 × 10^14 )
E= 5.09x10^-19 J ≈ 5.10× 10^−19 J
∴The energy of a photon of this light is 5.10× 10^−19 J
The energy of a photon of this light is 5.10× 10⁻¹⁹J.
Frequency is the number of oscillations per second in the sinusoidal wave.
If f is the frequency, then energy of photon can be represented as
E=hf
where, E= energy of photon, f= frequency in Hz= 7.69 × 10¹⁴ Hz and h is Planck's constant = 6.63 × 10⁻³⁴ J s.
Substituting the values, we get the energy of photon
E= (6.63 × 10⁻³⁴ )*(7.69 × 10¹⁴)
E= 5.10× 10⁻¹⁹ J
Therefore, the energy of a photon of this light is 5.10× 10⁻¹⁹J.
Learn more about frequency.
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