Home
Class 12
PHYSICS
If the speed of light in a medium is 200...

If the speed of light in a medium is `200 xx 10^6" m"//"s"` , then refractive index of medium is ...... `[C = 3 xx 10^8" m"//"s"]`

A

1

B

1.2

C

1.33

D

1.5

Text Solution

Verified by Experts

The correct Answer is:
A, D
Refractive index `n=c/v=(3xx10^8)/(200xx10^6)=3/2`
`therefore` n = 1.5
Promotional Banner

Topper's Solved these Questions

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    KUMAR PRAKASHAN|Exercise SECTION-D (MULTIPLE CHOICE QUESTIONS (MCQs))(MCQs FROM .DARPAN. BASED ON TEXTBOOK)(TOTAL INTERNAL REFLECTION)|14 Videos

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    KUMAR PRAKASHAN|Exercise SECTION-D (MULTIPLE CHOICE QUESTIONS (MCQs))(MCQs FROM .DARPAN. BASED ON TEXTBOOK)(REFRACTION, MAGNIFICATION, POWER AND COMBINATION OF LENS)|29 Videos

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    KUMAR PRAKASHAN|Exercise SECTION-D (MULTIPLE CHOICE QUESTIONS (MCQs))(MCQs FROM .DARPAN. BASED ON TEXTBOOK)|26 Videos

  • MOVING CHARGES AND MAGNETISM

    KUMAR PRAKASHAN|Exercise SECTION D (MCQs ASKED IN COMPETITIVE EXAMS)|34 Videos

  • SAMPLE QUESTION PAPER

    KUMAR PRAKASHAN|Exercise PART-B SECTION-C|5 Videos

Similar Questions

Explore conceptually related problems

The speed of the light in a diamong is 1, 24,000 km/s. Find the refractive index of diamond if the speed of light in air is 3,00,000 km/s. (AS_(1))

If the critical angle for total internal reflection from a medium to vacuum is 30^@ , then velocity of light in the medium is .......... ms^(-1) . (c = 3.8 xx 10^8 m s^(-1) )

Diameter of a plano-convex lens is 6 cm and thickness at the centre is 3 mm. If speed of light in material of lens is 2 xx 10^8 m/s., the focal length of the lens is ......

(a) The refractive index of glass is 1.5. What is the speed of light in glass? ("Speed of light in vacuum is "3.0 xx 10^(8) m s^(-1)) (b) Is the speed of light in glass independent of the colour of light? If not, which of the two colours red and violet travels slower in a glass prism?

Electric field of one plane progresive electromagnetic wave is E_(Z)=100 cos (6xx10^(8)t + 4x)Vm^(-1) . Then refreactive index of medium pf propagation would be …..

11xx10^(11) photons are incident on a surface in 100s.These photons correspond to a wavelength of 10Å .If the surface area of the given surface is 0.01 m^(2) ,the intensity of given radiations is ………(velocity of light is 3xx10^(8)ms^(-1),h=6.625x10^(-34)JS)

The absolute refractive index of a medium is 2.0. The speed of light in vacuum/air is 3 xx 10^(8) m s^(-1) . Find the speed of light in the medium.

The uncertainty in momentum of an electron is 1 xx 10^-5 kg - m//s . The uncertainty in its position will be (h = 6.62 xx 10^-34 kg = m^2//s) .

Let the x-z plane be the boundary between two transparent media. Medium 1 in zge0 has a refractive index of sqrt2 and medium 2 with zlt0 has a refractive index of sqrt3 . A ray of light in medium 1 given by the vector vecA=6sqrt3hati+8sqrt3hatj-10hatk is incident on the plane of separation. The angle of refraction in medium 2 is:

KUMAR PRAKASHAN-RAY OPTICS AND OPTICAL INSTRUMENTS-SECTION-D (MULTIPLE CHOICE QUESTIONS (MCQs))(MCQs FROM .DARPAN. BASED ON TEXTBOOK)(REFRACTION)
  1. n(21)xxn(12) = …....

    Text Solution

    |

  2. Which of the following relation is correct for relative refractive ind...

    Text Solution

    |

  3. If the speed of light in a medium is 200 xx 10^6" m"//"s" , then refra...

    Text Solution

    |

  4. Time taken by the sunlight to pass through a slab of thickness 4 mm an...

    Text Solution

    |

  5. When a ray of light travel from one medium to other then the physical ...

    Text Solution

    |

  6. When light ray travels from denser to rarer medium and if theta1 is in...

    Text Solution

    |

  7. In hot summer as we move up refractive index of air in atmosphere .......

    Text Solution

    |

  8. The velocity of light in vacuum can be changed by changing ......

    Text Solution

    |

  9. Refractive index of glass with respect to air is 1.8. So refractive in...

    Text Solution

    |

  10. When a ray of light enters into the medium of refractive index of mu, ...

    Text Solution

    |

  11. Green light of wavelength 5460 Å is incident on an air and glass inter...

    Text Solution

    |

  12. Velocity of light in diamond, glass and water decreases in the followi...

    Text Solution

    |

  13. The refractive indices of water and glass are 1.2 and 1.5 respectively...

    Text Solution

    |

  14. A sound wave travels from air to water. The angle of incidence is alph...

    Text Solution

    |

  15. A complete transparent object is invisible ir free space, then what is...

    Text Solution

    |

  16. Refractive index of diamond is 2. Speed of ligh in it is ...... Cm//s.

    Text Solution

    |

  17. A ray of light having intensity 0.5 (W)/(m^2) is incident perpendicula...

    Text Solution

    |

  18. A ray of light is incident on liquid surface such that reflected and r...

    Text Solution

    |

  19. Light ray travels from air to glass and air to water, as shown in figu...

    Text Solution

    |

  20. An observer stand on the bank of lake finds fish at the depth 12 cm in...

    Text Solution

    |