Home
Class 12
PHYSICS
Out of 10J of radiant energy incident on...

Out of 10J of radiant energy incident on a surface, the energy absorbed by the surface is 2 J and the energy reflected is 7 J. Then, coefficient of transmission of the body is

A

0.2

B

0.7

C

0.1

D

zero

Text Solution

Verified by Experts

The correct Answer is:
C

`Q=Q_(a)+Q_(r)+Q_(t)`
`Q_(t)=10-(7+2)=1`
`t=(Q_(t))/(Q)=(1)/(10)=0.1`.
Promotional Banner

Topper's Solved these Questions

  • KINETIC THEORY OF GASES & RADIATION

    NIKITA PUBLICATION|Exercise MCQs (Perfectly black body, emmissive power and emmissivity)|38 Videos
  • KINETIC THEORY OF GASES & RADIATION

    NIKITA PUBLICATION|Exercise MCQs (Spectrum of Black Body Radiations in Terms Wavelength)|22 Videos
  • KINETIC THEORY OF GASES & RADIATION

    NIKITA PUBLICATION|Exercise MCQs (Thermodynamics)|56 Videos
  • INTERFERENCE AND DIFFRACTION

    NIKITA PUBLICATION|Exercise MULTPLE CHOICE QUESTIONS|333 Videos
  • MAGNETIC EFFECT OF ELECTRIC CURRENT

    NIKITA PUBLICATION|Exercise MCQs (Sensitivity and accuracy of M.C.G.)|1 Videos

Similar Questions

Explore conceptually related problems

the radiant energy absorbed by carotenoids is

If an athermanous body absorbs 20% of the incident radiant energy, then reflection coefficient of the body is

When 150 J of energy. is incident on surface of a body, 15 J of energy is reflected by it. If the coefficient of absorption is 0.6, then the amount of energy transmitted will be

Potential energy of a 3kg body at the surface of a planet is -54 J , then escape velocity will be :

Heat energy is incident on the surface at the rate of 1000J/min. If coefficient of absorption is and coeffiicient of reflection is 0.5 the heat energy transmitted by the surface in 5 min is

Total radiations incident on body = 400 J , 20% radiation reflected and 120 J absorbs. Then find out % of transmittive power

NIKITA PUBLICATION-KINETIC THEORY OF GASES & RADIATION -MCQs (Absorption, reflection and transmission of heat radiation)
  1. The earth radiates in the infra-red region of the spectrum. The spectr...

    Text Solution

    |

  2. Infrared radiation is detected by

    Text Solution

    |

  3. A hot and a cold body are kept in vacuum separated from each other. Wh...

    Text Solution

    |

  4. The coefficient of absorption is the ratio of

    Text Solution

    |

  5. Athermanous bodies are those

    Text Solution

    |

  6. The transmission of heat by molecular collision is called

    Text Solution

    |

  7. When thermal radiations incident on athermanous medium, the temperatur...

    Text Solution

    |

  8. The coefficient of absorption of the thermal radiation of black body ...

    Text Solution

    |

  9. The sum of the absorptance, reflectance and transmittance of a body is

    Text Solution

    |

  10. The substance which are transparent to thermal radiation are

    Text Solution

    |

  11. Absorptive power of a body depend upon

    Text Solution

    |

  12. The coefficient of transmission is the ratio of

    Text Solution

    |

  13. The coefficient of reflection is the ratio of

    Text Solution

    |

  14. A good absorber is a

    Text Solution

    |

  15. The diathermanous is

    Text Solution

    |

  16. The coefficients off absorption and reflection of the surface of a thi...

    Text Solution

    |

  17. Out of 10J of radiant energy incident on a surface, the energy absorbe...

    Text Solution

    |

  18. If an athermanous body absorbs 20% of the incident radiant energy, the...

    Text Solution

    |

  19. The coefficients of absorption and reflection of the surface of a body...

    Text Solution

    |

  20. The coefficieents of absorption and transmission of the are 0.50 and 0...

    Text Solution

    |