Home
Class 12
PHYSICS
Light travels in two media A and B with ...

Light travels in two media A and B with speeds `1.8 xx 10^(8) ms^(-1)` and `2.4 xx 10^(8) ms^(-1)` respectively. Then the critical angle between them is

A

`sin^(-1)(2/3)`

B

`tan^(-1)(3/4)`

C

`tan^(-1)(2/3)`

D

`sin^(-1)(3/4)`

Text Solution

Verified by Experts

The correct Answer is:
D
(d) We have,
`C=sin^(-1)(v_(1)/v_(2))=sin^(-1)(3/4)`
Promotional Banner

Topper's Solved these Questions

  • RAY OPTICS

    DC PANDEY ENGLISH|Exercise medical entrance special format question|23 Videos

  • RAY OPTICS

    DC PANDEY ENGLISH|Exercise Medical entrance gallary|76 Videos

  • RAY OPTICS

    DC PANDEY ENGLISH|Exercise Checkpoint 9.7|10 Videos

  • NUCLEI

    DC PANDEY ENGLISH|Exercise C MADICAL ENTRANCES GALLERY|46 Videos

  • REFLECTION OF LIGHT

    DC PANDEY ENGLISH|Exercise Subjective|9 Videos

Similar Questions

Explore conceptually related problems

Light travels in two media A and B with speeds 1.8 × 10^(8) m s^(–1) and2.4 × 10^(8) m s^(–1) respectively. Then the critical angle between them is

Two molecules of a gas have speeds of 9xx10^(6) ms^(-1) and 1xx10^(6) ms^(-1) , respectively. What is the root mean square speed of these molecules.

The velocities of light in two different media are 2* 10^8 m/s and 2.5 * 10^8 m/s respectively.The critical angle for these media is

Two transparent media A and B are separated by a plane boundary. The speed of light in medium A is 2.0xx10^(8)ms^(-1) and in medium B is 2.5xx10^(8)ms^(-1) . The critical angle for which a ray of light going from A to B suffers total internal reflection is

Two transparent media A and B are separated by a plane boundary. The speed of light in medium A is 2.0xx10^(8)ms^(-1) and in medium B is 2.5xx10^(8)ms^(-1) . The critical angle for which a ray of light going from A to B suffers total internal reflection is

The speed of light in media M_1 and M_2 are 1.5 xx 10^8 m//s and 2.0 xx 10^8 m//s respectively. A ray of light enters from medium M_1 to M_2 at an incidence angle i . If the ray suffers total internal reflection, the value of i is.

Two particles A and B start at the origin O and travel in opposite directions along the circular path at constant speeds v_(A)=1.4ms^(-1) and v_(B)=3ms^(-1) respectively. The time when they collide and the magnitude of the acceleration of B just before this happens are

Two trains are each 50 m long moving parallel towards each other at speeds 10 ms^(-1) and 15 ms^(-1) respectively, at what time will they pass each other ?

The wavelengths for the light of red and blue colours are nearly 7.8 xx 10^(-7) m and 4.8 xx 10^(-7) m respectively. (a) Which colour has greater speed in vacuum ? (b) Which colour has greater speed in glass?

The dissociation constants for HCOOH " and " CH_(3)COOH " are " 2.1 xx 10^(-4) " and " 1.8 xx 10^(-5) respectively. Calculate the relative strengths of the acids .

DC PANDEY ENGLISH-RAY OPTICS-Exercise
  1. We combined a convex lens of focal length f(1) and concave lens of foc...

    Text Solution

    |

  2. The wavelength of light is 589 nm. What is its wavelength in Å ?

    Text Solution

    |

  3. Light travels in two media A and B with speeds 1.8 xx 10^(8) ms^(-1) a...

    Text Solution

    |

  4. The focal length of a thin convex lens for red and blue colours is 100...

    Text Solution

    |

  5. Two mirrors are placed at right angle to each other. A man is standing...

    Text Solution

    |

  6. To get three images of a single object, One should have two plane mirr...

    Text Solution

    |

  7. If two mirrors are keps at 60^circ to each other, then the number of i...

    Text Solution

    |

  8. If the focal length of the ey piece of the telescope is doubled, then ...

    Text Solution

    |

  9. Angular resolving power of human eye is

    Text Solution

    |

  10. If the red light is replaced by blue light illuminating the object in ...

    Text Solution

    |

  11. A telescope using light having wavelength 5000 Å and using lenses of f...

    Text Solution

    |

  12. An astronomical telescope in normal adjustment receives light from a d...

    Text Solution

    |

  13. An astronomical telescope has an angular magnification of magnitude 5 ...

    Text Solution

    |

  14. Magnification produced by astronominal telescope for normal adjustment...

    Text Solution

    |

  15. Where should a person stand straight from the pole of a convex mirror ...

    Text Solution

    |

  16. The radius of curvature of the curved surface of a plano-convex lens i...

    Text Solution

    |

  17. Wavelength of given light waves in air and in a medium are 6000 Å and ...

    Text Solution

    |

  18. A convex and a concave mirror of radii 10 cm are placed facing each ot...

    Text Solution

    |

  19. The focal length of the lensese of an astronomical telescope are 50 cm...

    Text Solution

    |

  20. An object 5 cm tall is placed 1 m from a concave spherical mirror whic...

    Text Solution

    |