Home
Class 11
PHYSICS
Pick out the statement which is not true...

Pick out the statement which is not true

A

IR radiations are used for long distance photography

B

IR radiations arise due to inner electron transitions in atoms

C

IR radiations are detected by using a bolometer

D

Sun is the natural source of IR radiation

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • TRANSMISSION OF HEAT

    ERRORLESS |Exercise Radiation (Wein s law)|30 Videos

  • TRANSMISSION OF HEAT

    ERRORLESS |Exercise Radiation (Stefan s law)|56 Videos

  • TRANSMISSION OF HEAT

    ERRORLESS |Exercise Convection|13 Videos

  • THERMOMETRY, THERMAL EXPANSION AND CALORIMETRY

    ERRORLESS |Exercise Self Evaluation Test|15 Videos

  • UNITS, DIMENSION & MEASUREMENTS

    ERRORLESS |Exercise All Questions|333 Videos

Similar Questions

Explore conceptually related problems

Pick out the statement which is incorrect?

Pick out the statement which is incorrect about Pelecypods .

Pick out the statement which is correct about Echinus.

Pick out the statement(s) which is ( are ) not true about the diagonal relationship of Li and Mg. (i)Polarising powers of Li^(+) and Mg^(2+) are almost same. (ii) Like Li, Mg decoposes water very fast (iii) LiCl and MgCl_(2) are deliquescent. (iv) Like Li,Mg does not form solid bicarbonates.

Pick out the statement(s) which is (are ) not true about the diagonal relationship of Li and Mg. i) Polarising powers of Li^(+) and Mg^(2+) are almost same . ii) Like Li , Mg decompose water very fast . iii) LiCl and MgCl_(2) are deliquescent . iv) Like Li , Mg does not form solid bicarbonates .

Pick out erong statements

ERRORLESS -TRANSMISSION OF HEAT-Radiation (General, Kirchoff s law, Black body)
  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. Pick out the statement which is not true

    Text Solution

    |

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

    Text Solution

    |

  5. Good absorbers of heat are

    Text Solution

    |

  6. For a perfectly black body, its absorptive power is

    Text Solution

    |

  7. Certain substance emits only the wavelengths lamda1,lamda2,lamda3 and ...

    Text Solution

    |

  8. Compared to a person with white skin another person with dark skin wil...

    Text Solution

    |

  9. Relation between emissivity e and absorptive power a is (for black bod...

    Text Solution

    |

  10. Which of the following statements is wrong ?

    Text Solution

    |

  11. Half part of ice block is covered with black cloth and rest half is co...

    Text Solution

    |

  12. If between wavelength lambda andlambda + dlambda, e(lambda) and a(lamb...

    Text Solution

    |

  13. If 'p' calorie of heat energy is incident on a body and absorbs 'q' ca...

    Text Solution

    |

  14. Distribution of energy in the spectrum of a black body can be correctl...

    Text Solution

    |

  15. In rainy season, on a clear night the black seat of a bicycle becomes ...

    Text Solution

    |

  16. A polished metal plate with a rough black spot on it is heated to abou...

    Text Solution

    |

  17. At a certain temperature for given wavelength, the ratio of emissive p...

    Text Solution

    |

  18. The cause of Fraunhoffer lines is

    Text Solution

    |

  19. Two thermometers A and B are exposed in sunlight. The bulb of A is pai...

    Text Solution

    |

  20. There is a black spot on a body. If the body is heated and carried in ...

    Text Solution

    |