Home
Class 11
PHYSICS
Assertion : Animals curl into a ball, wh...

Assertion : Animals curl into a ball, when they feel very cold.
Reason : Animals by curling their body reduces the surface area.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion

C

If assertion is true reason is false

D

If the assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • TRANSMISSION OF HEAT

    ERRORLESS |Exercise ET Self Evaluation Test|23 Videos

  • TRANSMISSION OF HEAT

    ERRORLESS |Exercise Graphical Questions|17 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

Assertion: Small animals tend to lose body heat very fast when it is cold outside. Reason: Small animals have a larger surface area relative to their volume.

Assertion : Small sized animals are rarely found in polar regions. Reason : Small sized animals have larger surface area relative to their volume and they have to spend much energy to generate body heat through metabolism.

Assertion : Cell wall is not found in animal cell. Reason : Animal cells are covered by cell membrane.

Assertion : In a practical choke coil, power factor is very small. Reason : In a practical choke coil, heat dissipation reduces when frequency of AC source is increased.

When the animals feel cold, they curl their bodies into the …………. So as to ………….. The surface area of their bodies.

Assertion : Liger in a hybrid animal. Reason : Liger is fertile.

Assertion : Cold blooded animals do not have fat layer. Reason : Cold blooded animals use their fat for metabolic process during hibemation

ERRORLESS -TRANSMISSION OF HEAT-Assertion & Reason
  1. Assertion : Bodies radiate heat at all temperatures. Reason : Ra...

    Text Solution

    |

  2. Assertion : Woollen clothes keep the body warm in winter Reason : Ai...

    Text Solution

    |

  3. Assertion : The equivalent thermal conductivity of two plates of same ...

    Text Solution

    |

  4. Assertion : A hollow metallic closed container maintained at a uniform...

    Text Solution

    |

  5. Assertion : If the temperature of a star is doubled then the rate loss...

    Text Solution

    |

  6. Assertion : The radiation from the sun’s surface varies as the fourth ...

    Text Solution

    |

  7. Assertion : Blue star is at high temperature than red star. Reason :...

    Text Solution

    |

  8. Assertion : The S.I. unit of thermal conductivity is watt m ^(1)1 K^(1...

    Text Solution

    |

  9. Assertion : A brass tumbler feels much colder than a wooden tray on a ...

    Text Solution

    |

  10. Assertion: Like light radiation, thermal radiations are also electroma...

    Text Solution

    |

  11. Assertion : Snow is better insulator than ice. Reason : Snow con...

    Text Solution

    |

  12. Assertion : Water can be boiled inside satellite by convection. Re...

    Text Solution

    |

  13. Assertion : The absorbance of a perfect black body is unity. Reas...

    Text Solution

    |

  14. Assertion : A man would feel iron or wooden balls equally hot at 98.4°...

    Text Solution

    |

  15. Statement-1 : As temperature of a black body is raised, wavelenght cor...

    Text Solution

    |

  16. Assertion : All black coloured objects are considered black bodies. ...

    Text Solution

    |

  17. Assertion : Greater is the coefficient of thermal conductivity of a ma...

    Text Solution

    |

  18. Assertion : Radiation is the speediest mode of heat transfer. Rea...

    Text Solution

    |

  19. Assertion : Two thin blankets put together are warmer than a single bl...

    Text Solution

    |

  20. Assertion : Animals curl into a ball, when they feel very cold. Re...

    Text Solution

    |