Home
Class 12
PHYSICS
The wavelength of max. emission for moon...

The wavelength of max. emission for moon is 14 micron. Estimate the temp. of moon if `b=28.84xx10^(-4)` mK is

A

150 K

B

206 K

C

300 K

D

500 K.

Text Solution

Verified by Experts

The correct Answer is:
B

`lamda_(m)*T=b" "rArr" "T=(28.84xx10^(-4))/(14xx10^(-6))=206K`.
Thus correct choice is (b).
Promotional Banner

Topper's Solved these Questions

  • TRANSFERENCE OF HEAT

    MODERN PUBLICATION|Exercise Multiple Choice Questions (Level - II)|49 Videos
  • TRANSFERENCE OF HEAT

    MODERN PUBLICATION|Exercise Multiple Choice Questions (Level - III) Questions From AIEEE/JEE Examination)|5 Videos
  • SOLIDS & SEMICONDUCTOR DEVICES

    MODERN PUBLICATION|Exercise Revision Test|28 Videos
  • UNIFORM CIRCULAR MOTION

    MODERN PUBLICATION|Exercise Revision Test |57 Videos

Similar Questions

Explore conceptually related problems

The deBroglie wavelength of an electron travelling at 1% of the speed of light is( h=6.6xx10^(-4) Js, mass of electron =9.0xx10^(-31) kg

(a) A giant refracting telescope at an observatory has an objective lens of focal length 15m. If an eyepiece of focal length 1.0cm is used, what is the angular magnification of the telescope? (b) If this telescope is used to view the moon, what is the diameter of the image of the moon formed by the objective lens? The diameter of the moon is 3.48 xx 10^(6)m , and the radius of lunar orbit is 3.8xx10^(8)m .

A particle is moving three times as fast as an electron. The ratio of the de Broglie wavelength of the particle to that of the electron is 1.813 xx 10^(-4) . Calculate the particle’s mass and identify the particle.

The moon is observed from two diametrically opposite points A and B on Earth. The angle theta subtended at the moon by the two directions of observation is 1^(@)54' . Given the diameter of the Earth to be about 1.276xx10^(7) , compute the distance of the moon from the Earth.