Home
Class 12
PHYSICS
If the wavelength of light is 4000 Å, th...

If the wavelength of light is `4000 Å`, then the number of waves in `1 mm` length will be

A

25

B

2500

C

250

D

25000

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • WAVE THEORY OF LIGHT

    TARGET PUBLICATION|Exercise EVALUATION TEST|20 Videos
  • WAVE THEORY OF LIGHT

    TARGET PUBLICATION|Exercise CRITICAL THINKING|43 Videos
  • WAVE MOTION

    TARGET PUBLICATION|Exercise MCQ 7.1|61 Videos

Similar Questions

Explore conceptually related problems

The wavelenth of light is 5000 Å . Find the wave number.

A light wave in air enters a medium of refractive index (4)/(3) . If the wavelength of light in air is 6000Å , then the wave number of light in the medium is

The wavelength of a beam of light in air is 5000 Å . Find the number of waves of the beam in 10 cm of glass of refractive index 1.5 k

Red light of wavelength 6400 Å in air has a wavelength of 4000 Å in glass. If the wavelength of violet light in air is 4400 Å, then the wavelength in glass is

The wavelength of light having wave number 4000 cm is

If wavelength of radiation is 4000Å=400nm then the energy of the photon is

If wavelength of a wave is lambda = 6000 Å .Then wave number will be

In Young's double-slit experiment, 30 fringes are obtained in the field of view of the observing telescope, when the wavelength of light used is 4000 Å . If we use monochromatic light of wavelength 6000 Å , the number of fringes obtained in the same field of view is

TARGET PUBLICATION-WAVE THEORY OF LIGHT -COMPETITIVE THINKING
  1. The change in wavelenght of light of frequency 4 xx 10 ^(14)Hz. When i...

    Text Solution

    |

  2. The wavelenth of light is 5000 Å . Find the wave number.

    Text Solution

    |

  3. If the wavelength of light is 4000 Å, then the number of waves in 1 mm...

    Text Solution

    |

  4. For a radiation of 8 GHz passing though air. The number of waves passi...

    Text Solution

    |

  5. A light wave in air enters a medium of refractive index (4)/(3). If t...

    Text Solution

    |

  6. A light passes through glass slabv of refractive index 1.5 and thickne...

    Text Solution

    |

  7. Light passess through glass of refractive index 1.5 . What is the tim...

    Text Solution

    |

  8. The ratio of velocities of light in glass that in whater is ( refract...

    Text Solution

    |

  9. Time taken by the light ot travel through 5 cm orf glass is same is ...

    Text Solution

    |

  10. A ray of light is incident normally on a glass slab of thickness 5 cm ...

    Text Solution

    |

  11. A paralel beam of monochromatic light is incident on a glass slab at a...

    Text Solution

    |

  12. Light travels through a glass plate of thickness t and refractive inde...

    Text Solution

    |

  13. The time taken by the sunlight to reach the bottom of a tank of depth...

    Text Solution

    |

  14. When the same monochromatic ray of light travels through glass slab...

    Text Solution

    |

  15. V(0) and V(E) represent the velocities, m0 and mE the refractive indi...

    Text Solution

    |

  16. Through which character we can distiguish the light waves from sound w...

    Text Solution

    |

  17. Which of the following cannot be polarised?

    Text Solution

    |

  18. In the propagation of electromagnetic waves the angle between the dire...

    Text Solution

    |

  19. When a plane polarised light is passed through an analyser and analyse...

    Text Solution

    |

  20. A beam of light AO is incident on a glass slab (mu=1.54) in a directio...

    Text Solution

    |