Question

1. The average wavelength of the yellow light emitted
from a sodium lamp is 5893 Å. Express it in nanom-
eters.​

Answer 1

Question:-

• The average wavelength of the yellow light emitted from a sodium lamp is 5893 Å. Express it in nanom-meters.

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Answer 2

Answer:

The average wavelength of the yellow light emitted by a Na lamp is equal to 589.3nm.

Step-by-step explanation:

We have given, the wavelength of the yellow light:

λ = 5893 Å

Convert unit of wavelength from  Å to meters:

We know that 1 Å = 10⁻¹⁰m

Therefore, the wavelength, λ = 5893 × 10⁻¹⁰m

Now, to express the wavelength in nanometers,

We know that, 1nm = 10⁻⁹m

⇒    1m = 10⁹nm

Therefore,  the wavelength, λ = 5893 × 10⁻¹⁰ × 10⁹nm

λ = 5893 × 10⁻¹nm

λ = 589.3nm

Therefore, the yellow light of wavelength 5893Å is equal to 589.3nm.