Modern Physics> The largest wavelength in the uv region o...

The largest wavelength in the uv region of the hydrogen spectrum is 122 nm. the smallest wavelength in the infrared region of the hydrogen spectrum is?
a). 802nm
b). 823nm
c). 1882nm
d). 1648nm

I MOHAMED SHINAZ , 7 Years ago

Grade 12th pass

1 Answers

Vikas TU

Last Activity: 7 Years ago

Dear Student,
(B) option seemss corect.
1/l=R(1/n₂²-1/n₁²)
=>1/122=R(1-1/4)
=>1/122=3R/4
=>R=4/3x122

smallest l in the infrared region. n₁= infinity
n₂=3
Therefore, 1/l = R(1/3²-1/infinity)
=R/9
l=9/R=823nm.

Cheers!!

Regards,

Vikas (B. Tech. 4^th year
Thapar University)

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Modern Physics> The largest wavelength in the uv region o...

The largest wavelength in the uv region of the hydrogen spectrum is 122 nm. the smallest wavelength in the infrared region of the hydrogen spectrum is?a). 802nmb). 823nmc). 1882nmd). 1648nm

I MOHAMED SHINAZ , 7 Years ago

Vikas TU

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