Home
Class 12
PHYSICS
Light with an average flux of 20 W/cm^2 ...

Light with an average flux of `20 W/cm^2` falls on a non-reflecting surface at normal incidence having surface area `20 cm^2`. The energy received by the surface during time span of 1 minute is:

A

` 10 x 10^3 J`

B

` 12 x 10^3 J`

C

` 24 x 10^3 J`

D

` 48 x 10^3 J`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • NEET

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise MCQ|95 Videos

  • NEET 2021

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise QUESTION|50 Videos

Similar Questions

Explore conceptually related problems

Light with an energy flux of 18W//cm^(2) falls on a non-reflecting surface at normal incidence. The pressure exerted on the surface is

Light with an energy flux of 40W//cm^(2) falls on a non-reflecting surface at normal incidence. If the surface has an area of 20cm^(2) , find the average force exerted on the surface during a 30min time span.

Light with an enargy flux of 25xx10^(4) Wm^(-2) falls on a perfectly reflecting surface at normal incidence. If the surface area is 15 cm^(2) , the average force exerted on the surface is

Light with an energy flux 20 W//cm^2 falls on a non-reflecting surface at normal incidence. If the surface has an area of 30 cm^2 . the total momentum delivered ( for complete absorption)during 30 minutes is

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

Light with energy flux of 18W//cm^(2) falls on a non reflecting surface of area 20cm^(2) at normal incidence the momentum delivered in 30 minutes is

NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-NEET 2020-All Questions
  1. Light with an average flux of 20 W/cm^2 falls on a non-reflecting surf...

    Text Solution

    |

  2. For transistor action, which of the following statements are correct ?

    Text Solution

    |

  3. which of the following graph represents the variation of resistivity (...

    Text Solution

    |

  4. In certain region of space with volume 0.2 m^3 the electric potential ...

    Text Solution

    |

  5. For the logic circuit shown the truth table is

    Text Solution

    |

  6. A 40 micro F capacitor is connected to a 200V, 50 Hz ac supply. Rms va...

    Text Solution

    |

  7. A cylinder contains hydrogen gas at pressure of 249 kPa and temperatur...

    Text Solution

    |

  8. Taking into account of significant figures what is value of 9.99m - 0....

    Text Solution

    |

  9. The mean free path for gas with molecular diameter d and number densit...

    Text Solution

    |

  10. An iron rod of susceptiblity 599 is subjected to a magnetising field o...

    Text Solution

    |

  11. A short electric dipole has dipole moment of 16 x 10^-9 C m. The elect...

    Text Solution

    |

  12. A body weighs 72N on surface of earth what is gravitational force on i...

    Text Solution

    |

  13. The solids which have negative temperature coefficient of resistance a...

    Text Solution

    |

  14. Light of frequency 1.5 times the threshold frequency is incident on a ...

    Text Solution

    |

  15. A seriesLCR circuit is connected to an ac voltage source. When L is re...

    Text Solution

    |

  16. A spherical conductor of radius 10 cm has a charge of 3.2 x 10^-7 C di...

    Text Solution

    |

  17. Find the torque about the origin when a force of 3 hatj N acts on a pa...

    Text Solution

    |

  18. A charged particle having drift velocity of 7.5 x 10^-4 m/s in an elec...

    Text Solution

    |

  19. A ray is incident at an angle of incidence i on one surfcae of a small...

    Text Solution

    |

  20. The quantities of heat required to raise the temperature of two solid ...

    Text Solution

    |