Home
Class 12
PHYSICS
A black body at 1500K emits maximum ener...

A black body at 1500K emits maximum energy of wavlength 20000`Å`. If sun emits maximum energy of wavelength `5500Å`, what would be the temperature of sun.

Text Solution

Verified by Experts

According to Wein's displacement law, we have
`lambda_(m)T = constant`
or `lambda_(m1)T_(1) = lambda_(m2)T_(2)`
Thus `20000 xx 10^(-10) xx 1500`
`=5500 xx 10^(-10) xx T_(2)`
or `T_(2) =(200)/(55) xx 1500`
=5454.54K
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • HEAT TRANSFER

    PHYSICS GALAXY - ASHISH ARORA|Exercise Illustrative Example 4.28|1 Videos
  • HEAT TRANSFER

    PHYSICS GALAXY - ASHISH ARORA|Exercise Illustrative Example 4.29|1 Videos
  • HEAT TRANSFER

    PHYSICS GALAXY - ASHISH ARORA|Exercise Illustrative Example 4.26|1 Videos
  • HEAT AND THERMAL EXPANSION

    PHYSICS GALAXY - ASHISH ARORA|Exercise UNSOLVED NUMRICAL PROBLEMS FOR PREPARATION OF NSEP, INPhO & IPhO|82 Videos
  • Kinetic Theory of Gases and Gas Laws

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numerical Problems for Preparation of NSEP, INPhO & IPhO|64 Videos

Similar Questions

Explore conceptually related problems

A black body at 20000 K, emits maximum energy at a wavelength of 1.56 mu m . At what temperature will it emit maximum energy at a wavelength of 1.8 mu m ?

A black body emits maximum radiation of wavelength lambda_1 =2000 Å at a certain temperature T_1 . On increasing the temperature , the total energy of radiation emitted is increased 16 times at temperature T_2 . If lambda_2 is the wavelength corresponding to which maximum radiation emitted at temperature T_2 . Calculate the value of (lambda_1/lambda_2)

Knowledge Check

  • A black body is at 2000 K, it emits maximum energy at a wavelength. 1mum. . The temperature, it emits at wavelength of 2mum is

    A
    1000 K
    B
    2000 K
    C
    500 K
    D
    100 K
  • A black body at 200 K is found to emit maximum energy at a wavelength of 14mu m . When its temperature is raised to 1000 K, the wavelength at which maximum energy is emitted is

    A
    `14mum`.
    B
    `70mum`.
    C
    `2.8mum`
    D
    `2.4mum`.
  • The sun radiates maximum energy at wavelength 4753Å . The surface temperature of the sun if b=2.888xx10^(-3)mK , is

    A
    6076 K
    B
    5706 K
    C
    4560 K
    D
    7000K
  • Similar Questions

    Explore conceptually related problems

    A black body emits maximum radiation of wavelength is lambda_1 = 2000 Å at a certain temperature T_1 . On increasing the temperature, the total energy of radiation emitted is increased 16 times at temperature T_2 .If lambda_2 is the wavelength corresponding to which maximum radiation emitted at temperature T_2 Calculate the value of (lambda_1/lambda_2)

    A black body at 200 K is found to exit maximum energy at a wavelength of 14mu m . When its temperature is raised to 1000 K , the wavelength at which maximum energy is emitted is

    A black body emits radiations of maximum intensity at a wavelength of Å 5000 , when the temperature of the body is 1227^(@)C . If the temperature of the body is increased by 1000^(@)C , the maximum intensity of emitted radiation would be observed at

    A black body at 1227^(@)C emits radiations with maximum intensity at a wavelength of 5000 Å . If the temperature of the body is increased by 1000^(@) , the maximum intensity will be observed at

    A black body emits radiations of maximum intensity at a wavelength of 5000 A, when the temperature of the body is 1227° C. If the temperature of the body is increased by 2227 °C, the maximum intensity of emitted radiation would be observed at