The value of Planck's constant is 6.63 × 10-34 Js. The speed of light is 3 × 1017 nm s-1. Which value is closest to the wavelength in nanometer of a quantum of light with frequency of 6 × 1015 s-1 ?

Question

The value of Planck's constant is 6.63 × 10-34 Js. The speed of light is 3 × 1017 nm s-1. Which value is closest to the wavelength in nanometer of a quantum of light with frequency of 6 × 1015 s-1 ? (A) 75 (B) 10 (C) 25 (D) 50

Tardigrade Admin · Accepted Answer

λ = (C/V) = (3 × 1017 nms-1/6 × 1015 s-1) = 50 nm

Q. The value of Planck's constant is $6.63 \times 1 0^{- 34} J s$ . The speed of light is $3 \times 1 0^{17} nm s^{- 1}$ . Which value is closest to the wavelength in nanometer of a quantum of light with frequency of $6 \times 1 0^{15} s^{- 1}$ ?

75

10

25

50

$λ = \frac{C}{V} = \frac{3 \times 1 0 ^{17} nm s ^{- 1}}{6 \times 1 0 ^{15} s ^{- 1}} = 50 nm$

Q. The value of Planck's constant is 6.63×10−34Js. The speed of light is 3×1017nms−1. Which value is closest to the wavelength in nanometer of a quantum of light with frequency of 6×1015s−1 ?

75

10

25

50

λ=VC​=6×1015s−13×1017nms−1​=50nm

Q. The value of Planck's constant is $6.63 \times 1 0^{- 34} J s$ . The speed of light is $3 \times 1 0^{17} nm s^{- 1}$ . Which value is closest to the wavelength in nanometer of a quantum of light with frequency of $6 \times 1 0^{15} s^{- 1}$ ?

$λ = \frac{C}{V} = \frac{3 \times 1 0 ^{17} nm s ^{- 1}}{6 \times 1 0 ^{15} s ^{- 1}} = 50 nm$