Home
Class 8
PHYSICS
Assertion & Reason : Direction : Mark th...

Assertion & Reason : Direction : Mark the correct choice as : Assertion : When lightning strikes, the sound is heard a little after the flash is seen. Reason : The velocity of light is greater then of the sound.

A

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

B

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

C

If the assertion and reason is false.

D

If both assertion and reason are false,

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • Sound

    SURA PUBLICATION|Exercise Example|44 Videos
  • Measurement

    SURA PUBLICATION|Exercise Example|51 Videos
  • UNIVERSE AND SPACE SCIENCE

    SURA PUBLICATION|Exercise Example|28 Videos

Similar Questions

Explore conceptually related problems

Assertion & Reason: Direction Mark the correct choice as Assertion: The SI system of units is the suitable syatem for measurements. Reason: The SI unit of temperature is kelvin.

Assertion & Reason : Direction : Mark the correct choice as : Assertion : It is safer under a tall tree during lightning . Reason : It will make you fore lightning .

Assertion & Reason : Direction : Mark the correct choice as : Assertion : Two persons on the surface of moon cannot talk to each other. Reason : There is no atmosphere on moon.

Assertion & Reason : Direction : Mark the correct choice as : Assertion : People struvk by lightning receive a severe electrical shock. Reason : Lightning carries carries very high voltage.

Assertion & Resson:Direction: Mark the correct choice as Assertion: Radiation is a from of heat transfer which takes place even in vacuum. Reason: The thermal energy is transferred from one part of a substance to another part without the actual movement of the atoms or molecules.

Assertion & Reason: direction Mark the correct choice as Assertion: Electric current, amount of substance, Luminous Intensity are the fundamental physical quantities. Reason: They are independent of each other.

Assertion & Reason: direction Mark the correct choice as Assertion: Radian is the unit of solid angle. Reason: One radian is the angle subtended at the center of a circel by an are of length equal to its radius.

Assertion & Resson:Direction: Mark the correct choice as: Assertion: A system can be converted from one state to another state. Reason: If takes place when the temperature of the system is constant.

Assertion and Reason. Mark the correct choice as : Assertion: The pressure at the bottom of the sea is lesser then that near the surface. Reason: The pressure exerted by a liquid depends upon the depth of the liquid and density of the liquid .

Assertion and Reason. Mark the correct choice as:Assertion:We can see the rainbow in the sky when the rain starts falling after a spell of bright sunlight. Reason: The rainbow is formed due to disprsion of light.

SURA PUBLICATION-Sound-Example
  1. Assertion & Reason : Direction : Mark the correct choice as : Assertio...

    Text Solution

    |

  2. What are vibrations?

    Text Solution

    |

  3. Give an example to show that travels faster then sound.

    Text Solution

    |

  4. To increase loudness of sound by four times, how much should the ampl...

    Text Solution

    |

  5. What is an ultrasonic sound?

    Text Solution

    |

  6. Give two difference between music and noise.

    Text Solution

    |

  7. What are the hazards of noise pollution?

    Text Solution

    |

  8. What is the frequency of a mechanical wave that has a velocity of 25 m...

    Text Solution

    |

  9. A wave with a frequency of 500 Hz is travelling at a speed of 200 m^-1...

    Text Solution

    |

  10. True or False - if false, give the correct statement : The seismic wa...

    Text Solution

    |

  11. True or False - if false, give the correct statement : The loudness of...

    Text Solution

    |

  12. True or False - if false, give the correct statement : The pitch is th...

    Text Solution

    |

  13. True or False - if false, give the correct statement : The voice of a ...

    Text Solution

    |

  14. Write true or false, if false, correct the statement. : Longitudinal w...

    Text Solution

    |

  15. True or False - if false, give the correct statement : Sound with the ...

    Text Solution

    |

  16. True or False - if false, give the correct statement : In a transverse...

    Text Solution

    |

  17. True or False - if false, give the correct statement : Sir Issac Newto...

    Text Solution

    |

  18. True or False - if false, give the correct statement : Sound is produc...

    Text Solution

    |

  19. True or False - if false, give the correct statement : The frequency o...

    Text Solution

    |

  20. Pick out the odd one and give reason : Trumpet, Flute, Saxophone, Mout...

    Text Solution

    |

  21. Pick out the odd one and give reason : Drum, Violin, Guitar, Sitar.

    Text Solution

    |