Home
Class 12
PHYSICS
A radiation of energy E falls normally o...

A radiation of energy E falls normally on a perfectly reflecting surface. The momentum transferred to the surface is

A

`E/C`

B

`"E/C"^(2)`

C

`EC`

D

`2E/C`

Text Solution

Verified by Experts

The correct Answer is:
D
Initial momentum of radiation, `P_(1)=(E )/(C )`
Final momentum of radiation, `P_(2)=-(E )/(C )`
`:.` Momentum transferred to the surface
`=P_(1)-P_(2)=(2E)/(C )`
Thus Correct choice is (d).
Promotional Banner

Topper's Solved these Questions

  • TRANSFERENCE OF HEAT

    MODERN PUBLICATION|Exercise Multiple Choice Questions (Level - III) Questions From AIEEE/JEE Examination)|5 Videos

  • TRANSFERENCE OF HEAT

    MODERN PUBLICATION|Exercise Recent Competitive Questions|4 Videos

  • TRANSFERENCE OF HEAT

    MODERN PUBLICATION|Exercise Recent Competitive Questions|4 Videos

  • SOLIDS & SEMICONDUCTOR DEVICES

    MODERN PUBLICATION|Exercise Revision Test|28 Videos

  • UNIFORM CIRCULAR MOTION

    MODERN PUBLICATION|Exercise Revision Test |57 Videos

Similar Questions

Explore conceptually related problems

A light beam of intensity 20 W//cm^(2) is incident normally on a perfectly reflecting surface of sides 25 cm x 15 cm. The momentum imparted to the surface by the light per second is

Define surface energy.

Light of wavelength 5000 Å falls on a plane reflecting surface. What are the wavelength and frequency of the reflected light? For what angle of incidence is the reflected ray normal to the incident ray?

Light with an energy flux of 18 W//cm^(2) falls on a nonreflecting surface at normal incidence. If the surface has an area of 20 cm^(2) , find the average force exerted on the surface during a 30 minute time span.

If 'U' is the total energy transferred to the surface by an electromagnetic them relate total momentum (p) of electriomagnetic delivered to the surface in terms 'U'.

MODERN PUBLICATION-TRANSFERENCE OF HEAT -Multiple Choice Questions (Level - II)
  1. Time taken by the body to cool from 45^(@)C to 35^(@)C is

    Text Solution

    |

  2. The plots of intensity versus wavelength for three black bodies at tem...

    Text Solution

    |

  3. Two spheres of the same material have radii 1 m and 4 m and temperatur...

    Text Solution

    |

  4. The graph shown in the adjacent diagram, represents the variation of t...

    Text Solution

    |

  5. Three discs A, B and C having radii 2m, 4 m and 6 m respectively are c...

    Text Solution

    |

  6. Two identical conducting rods are first connected independently to two...

    Text Solution

    |

  7. A radiation of energy E falls normally on a perfectly reflecting surfa...

    Text Solution

    |

  8. A body with area A at maintained temperature T and emissivity e=0.6 is...

    Text Solution

    |

  9. Ice starts forming in a lake water at 0^(@)C when the atmospheric temp...

    Text Solution

    |

  10. A body is placed in an insulating container at temperature 227^(@)C. I...

    Text Solution

    |

  11. A cylindrical rod is having temperature T(1) and T(2) at its ends. The...

    Text Solution

    |

  12. The rate of cooling at 600 K, if surrounding tempearture is 300 K is R...

    Text Solution

    |

  13. One end of a copper rod of length 1.0m and area of cross-section 10^(-...

    Text Solution

    |

  14. Consider a compound slab consisting of two different materials having ...

    Text Solution

    |

  15. The dimensions of thermal resistance are :

    Text Solution

    |

  16. There is formation of layer of snow x cm thick on water, when the temp...

    Text Solution

    |

  17. Suppose the sun expands, so that its radius becomes 100 times its pres...

    Text Solution

    |

  18. Which of the following circular rods, (given radius r and length l) ea...

    Text Solution

    |

  19. A hot liquid kept in a breaker cools from 80^(@)C to 70^(@)C in two mi...

    Text Solution

    |

  20. The two ends of a rod of length L and a uniform cross-sectional area A...

    Text Solution

    |