Home
Class 12
PHYSICS
Compare the dispersive powers of two pri...

Compare the dispersive powers of two prisms if one of them deviates the blue and red rays through `10^(@)and6^(@)` respectively and the second prism through `8^(@)and4.5^(@)`

A

0.69

B

0.79

C

0.89

D

0.99

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section - B) Objective Type Questions (One option is correct)|15 Videos

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section - C) Objective Type Questions (More than one option are correct)|9 Videos

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (SECTION - D)|16 Videos

  • PHYSICAL WORLD

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (Section-B)|4 Videos

  • SEMICONDUCTOR ELECTRONICS (MATERIAL, DEVICES AND SIMPLE CIRUITS )

    AAKASH INSTITUTE ENGLISH|Exercise Assignment SECTION - D (Assertion & reason type Question)|10 Videos

Similar Questions

Explore conceptually related problems

Compare the dispersive powers of two prisms if one of them deviates the blue and red rays through 10^(@) and 6^(@) respectively and the second prism through 8^(@) and 4.5^(@)

A prism of a certain angle deviates the red and blue rays by 8^@ and 12^@ respectively. Another prism of the same angle deviates the red and blue rays by 10^@ and 14^@ respectively. The prisms are small angled and made of different materials. The dispersive powers of the materials of the prisms are in the ratio

Two small angled prisms A and B deviate the blue rays by 6^(@) and 8^(@) and the red rays by 4^(@) and 6^(@) respectively. Which prism has a greater dispersive power ?

Suppose a small angled prism of 6^(@) deviates a ray through 3^(@) , then the refractive index is

A total reflecting right angled isosceles prism can be used to deviate a ray of light through :

Flint glass prism is joined by a crown glass prism to produce dispersion without deviation. The refractive indices of these for mean rays are 1.602 and 1.500 respectively. Angle of prism of flint prism is 10^(@) , then the angle of prism for crown prism will be

A total reflecting equilateral prism can be used to deviate a ray of light through :

The refractive indices of violet and red light are 1.54 and 1.52 respectively. If the angle of prism is 10^(@) , then the angular dispersion is

White light is passed through a prism of angle 5^@ . If the refractive indices for red and blue colours are 1.641 and 1.659 respectively, calculate the angle of deviation between them, also calculate the dispersive power.

When a ray of sun light passes through the prism, each colour of light has its own speed in the glass. The seven colours come out of the prism with different angles of deviation. Red deviates least and blue deviates maximum. Thus a prism can disperse a white light into seven colours which is called colour spectrum. For a thin prism, the angle of deviation is given as delta=(n-1)A . The angle of dispersion is given as phi=delta_(v)-delta_(r) . The dispersive power of a prism is omega=(phi)/(delta_("mean"))=(phi)/(delta_(y)) Using the above ideas, give answer the following questions. A prism has R.I. for violet and red n_(v)=1.523, n_(r)=1.5145 . If the angle of prism is A=2^(@) the dispersive power of the prism is :

AAKASH INSTITUTE ENGLISH-RAY OPTICS AND OPTICAL INSTRUMENTS-Assignment (Section - A) Objective Type Questions (One option is correct)
  1. The radii of curvatures of a convex lens are 0.04 m and 0.04m. Its ref...

    Text Solution

    |

  2. For a plano convex lens, the radius of curvature of convex surface is ...

    Text Solution

    |

  3. A convex glass lens (mu(g) = 1.5) has a focal length of 8 cm when plac...

    Text Solution

    |

  4. A light ray is incident normally on one of the refracting faces of a p...

    Text Solution

    |

  5. If a light ray incidents normally on one of the faces of the prism of ...

    Text Solution

    |

  6. A ray of light is incident on one of the faces of the angle prism with...

    Text Solution

    |

  7. A prism of refractive index sqrt2 has refractive angle 60^@. In the or...

    Text Solution

    |

  8. The least angle of deviation for a glass prism is equal to its refract...

    Text Solution

    |

  9. A light ray of angles of incidence 40^(@) emerged from the prism in mi...

    Text Solution

    |

  10. The angle of minimum deviation for a 75^(@) prism of dense glass is fo...

    Text Solution

    |

  11. Suppose a small angled prism of 6^(@) deviates a ray through 3^(@), th...

    Text Solution

    |

  12. A crown glass prism of angle 5^@ is to be combined with a flint glass ...

    Text Solution

    |

  13. A thin prism of angle 6^(@) made up of glass of refractive index 1.5 i...

    Text Solution

    |

  14. Compare the dispersive powers of two prisms if one of them deviates th...

    Text Solution

    |

  15. A convex mirror forms an image one-fourth the size of the object. If o...

    Text Solution

    |

  16. A body weights 500N on the surface of the earth. How much would it wei...

    Text Solution

    |

  17. While a moving picture is being screened, a boy introduced a glass sla...

    Text Solution

    |

  18. A travelling microscope is focussed on to a scratch on the bottom of a...

    Text Solution

    |

  19. In optical fibre, refractive index of inner part is 1.68 and refractiv...

    Text Solution

    |

  20. A fish looking up throughthe water sees the outside the world, contain...

    Text Solution

    |