Question

Calculate The Wave Number Of Yellow Radiation Having Wavelength 5800 Angstrom​

Answer 1

$\fbox{ \fbox{ \bold{ \huge{Given :- \: }}}}$

$\bold{Wavelength = 5800 \: Å = \: 5800 \times {10}^{ - 10} \: Meter }$

$\fbox{ \fbox{ \bold{ \huge{Solution :- \: }}}}$

$\bold{Wave \: Number \: = \: \frac{1}{Wavelength \: } } \\ \\ \bold{Wave \: Number \: \: = \frac{1}{5800 \times {10}^{ - 10} } } \\ \\ \bold{Wave \: Number = \: 0.0001724 \times {10}^{ - 10} } \\ \\ \bold{Wave \: Number = \: 1724 \times {10}^{3}\: \: \: {m}^{ - 1} }$

Answer 2

Answer:

Wave number = 1/Wavelength = 1/(5800 Å)

= 1724137.93 m^-1

Frequency = c/Wavelength

= (3×10^8)/(5800)

= 5.168×10^14 Hz