«««< HEAD

======= ####60. The $21 c m$ radio wave emitted by hydrogen in interstellar space is due to the interaction called the hyperfine interaction in atomic hydrogen. The energy of the emitted wave is nearly

c3eec34ec6b1fad69db54a20ad4b2dca40c2aa54 (a) $10^{- 17} J$

(b) $1 J$

(d) $10^{- 24} J$

[1998]

Show Answer

Answer:

Correct Answer: 60. (d)

Solution:

$(d) \begin{aligned} E = h v = \frac{h c}{λ} = \frac{6.6 \times 10^{- 34} \times 3 \times 10^{8}}{0.21} \\ = \frac{6.6}{7} \times 10^{- 24} = 0.94 \times 10^{- 24} J \end{aligned}$

Play Store

App Store

Ask SATHEE

Welcome to SATHEE !
Select from 'Menu' to explore our services, or ask SATHEE to get started. Let's embark on this journey of growth together! 🌐📚🚀🎓

I'm relatively new and can sometimes make mistakes.
If you notice any error, such as an incorrect solution, please use the thumbs down icon to aid my learning.
To begin your journey now, click on "I understand".

Dual Nature of Radiation and Matter - Result Question 56

60. The 21cm radio wave emitted by hydrogen in interstellar space is due to the interaction called the hyperfine interaction in atomic hydrogen. The energy of the emitted wave is nearly

«««< HEAD

Answer:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

Menu

60. The $21 c m$ radio wave emitted by hydrogen in interstellar space is due to the interaction called the hyperfine interaction in atomic hydrogen. The energy of the emitted wave is nearly