Home
Class 11
PHYSICS
Two stars A and B radiate maximum energy...

Two stars `A` and `B` radiate maximum energy at wave lengths `4000Å` and `5000Å` respectively. The ratio of their temperature will be-

A

`3:4`

B

`81:256`

C

`4:3`

D

`256:81`

Text Solution

Verified by Experts

The correct Answer is:
C

According to Wien's displacement law,
`lambdaT`= constant
`thereforeT_(1)/T_(2)=lambda_(2)/lambda_(1) = 480/360 = 4/3`
Promotional Banner

Topper's Solved these Questions

  • CALORIMETRY AND HEAT TRANSFER

    DC PANDEY|Exercise Match the columns|4 Videos
  • CALORIMETRY & HEAT TRANSFER

    DC PANDEY|Exercise Level 2 Subjective|14 Videos
  • CENTRE OF MASS

    DC PANDEY|Exercise Medical entrances gallery|27 Videos

Similar Questions

Explore conceptually related problems

Two stars A and B radiates maximum energy at 3600 Å and 4200 Å, respectively. Then the ratio of their temperature is

Two stars emit maximum radiation at wavelength 3600 Å and 4800 Å respectively. The ratio of their temperatures is

Two stars A and B radiate maximum energy 5200Å and 6500Å respectively. Then the ratio of absolute temperatures of A and B is

Two bodies A and B have emissivities 0.5 and 0.8 respectively. At some temperature the two bodies have maximum spectral emissive powers at wavelength 8000 Å and 4000 Å respectively. The ratio of their emissive powers at these temperatures is :

The wavelength of the photons are 4500 Å and 6000 Å. The ratio of their energies is

Sun and moon emit maximum radiant energy at wavelength 5000 Å and 15mu respectively. Iff surface temperature of sun is 6000 K, then value of surface temperature of moon is

The sun radiates maximum energy at wavelength 4753Å . The surface temperature of the sun if b=2.888xx10^(-3)mK , is

The sun radiates maximum energy at a wavelength of 4753 Å. If the temperature of the sun is 6076 K, determine the temperature of a star for which maximum energy is emitted at 9300 Å

Stars S_(1) emits maximum radiation of wave length 420nm and the star S_(2) emits maximum radiation of wavelength 560nm , what is the ratio of the temperature of S_(1) and S_(2) :

DC PANDEY-CALORIMETRY AND HEAT TRANSFER-Medical entrance s gallery
  1. Same quantity of ice is filled in each of the two metal container P an...

    Text Solution

    |

  2. Two identical rods are connected between two containers. One of them i...

    Text Solution

    |

  3. Two rods of length d(1) and d(2) and coefficients of thermal conductiv...

    Text Solution

    |

  4. Certain quantity of water cools from 70^(@)C to 60^(@)C in the first 5...

    Text Solution

    |

  5. A piece of iron is heated in a flame. It first becomes dull red then b...

    Text Solution

    |

  6. The temperature of the two ends A and B of a rod of length 25cm and ci...

    Text Solution

    |

  7. Two stars A and B radiate maximum energy at wave lengths 4000Å and 500...

    Text Solution

    |

  8. In a room where the temperature is 30^(@)C, a body cools from 61^(@)C ...

    Text Solution

    |

  9. If the rate of emission of radiation by a body at temperature TK is E ...

    Text Solution

    |

  10. 500 kg of water is heated from 20^(@) to 100^(@) C . Calculate the inc...

    Text Solution

    |

  11. Water is used in car radiators as coolant because

    Text Solution

    |

  12. A body cools from 60^@C to 50^@C in 10 min. Find its temperature at ...

    Text Solution

    |

  13. If the radius of a star is R and it acts as a black body, what would b...

    Text Solution

    |

  14. Liquid oxygen at 50 K is heated to 300 K at constant pressure of 1 atm...

    Text Solution

    |

  15. The temperature at which a black body of unit area loses its energy at...

    Text Solution

    |

  16. A rod AB is 1m long. The temperature of its one end A is maintained at...

    Text Solution

    |

  17. Two slabs A and B of different materials but of the same thickness are...

    Text Solution

    |

  18. A piece of blue glass heated to a high temperature and a piece of red ...

    Text Solution

    |

  19. The temperature gradient in a rod of 0.5 m length is 80^(@)C//m. It th...

    Text Solution

    |

  20. The thickness of a metallic plate is 0.4 cm. The temperature between i...

    Text Solution

    |