The energy of a photon of green light of wavelength 5000 mathringA is

Question

The energy of a photon of green light of wavelength 5000 mathringA is (A) 3.459 × 10-19 joule (B) 3.973 × 10-19 joule (C) 4.132 × 10-19 joule (D) 8453 × 10-19 joule

Tardigrade Admin · Accepted Answer

E=h c / λ=6.6 × 10-34 × 3 × 108 / 5000 × 10-10 =3.973 × 10-19 J

Q. The energy of a photon of green light of wavelength $5000 \overset{˚}{A}$ is

$3.459 \times 1 0^{- 19}$ joule

$3.973 \times 1 0^{- 19}$ joule

$4.132 \times 1 0^{- 19}$ joule

$8453 \times 1 0^{- 19}$ joule

$E = h c / λ = 6.6 \times 1 0^{- 34} \times 3 \times 1 0^{8} /5000 \times 1 0^{- 10}$
$= 3.973 \times 1 0^{- 19} J$

Q. The energy of a photon of green light of wavelength 5000A˚ is

3.459×10−19 joule

3.973×10−19 joule

4.132×10−19 joule

8453×10−19 joule