Home
Class 12
PHYSICS
If nij is reftactive index of medium i w...

If nij is reftactive index of medium i with respect to medium j `n_21 X n_32 X n_43` = ..........

A

`3^(mu)""_1`

B

`3^(mu)""_2`

C

`(1)/(1^(mu)""_4)`

D

`4^(mu)""_2`

Text Solution

Verified by Experts

The correct Answer is:
A, C, D
`""_2mu_1xx""_3mu_2xx""_4mu_3=(mu_1)/(mu_2)xx(mu_2)/(mu_3)xx(mu_3)/(mu_4)`
`=(mu_1)/(mu_4)=""_4mu_1=(1)/(""_1mu_4)`
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)(MCQs BASED ON TEXTUAL ILLUSTRATION AND EXERCISE)|24 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

Refraction index of medium-2 with respect to medium-1 is ...... .

Which of the following doesn.t represent the refractive index of medium-2 with respect to medium-1 ?

A ray of light travelling in a transparent medium falls on a surface separating the medium from air at an angle of incidence of 45 degree. The ray undergoes total internal reflection. If n is the refractive index of the medium with respect to air, select the possible value (s) of n from the following:

n_(32)xxn_(21)=…....

n_(21)xxn_(12) = …....

As shown in figure a ray of light in air is incident at 30^@ on a medium and proceeds ahead in the medium. The refractive index of this medium varied with distance y as given by n(y) = 1.6 + (0.2)/(y +1)^(2) where y is in cm. What is the angle formed by the ray with the normal at a very large depth ?

Light rays emerge from denser medium ( n_2 ), refract from curved surface and then travel through rarer medium ( n_1 ), formula for this is ….........

In Young's double slit experiment the slits, S_(1) & S_(2) are illuminated by a parallel beam of light of wavelength 4000 Å from the medium of refractive index n_(1)=1.2 A thin film of thickness 1.2 mum and refractive index n=1.5 is placed infrom of S_(1) perpedicular to path of light. the refractive index of medium between plane of slits & screen is n_(2)=1.4 if the light coming from the film and S_(1)&S_(2) have equal intensities I then intensity at geometrical centre of the screen O is

In YDSE shown in figure a parallel beam of light is incident on the slits from a medium of refractive index n_(1) . The wavelength of light in this medium is lambda_(1) . A transparent of thickness t and refractive index n_(3) is put in front of one slit. The medium between the screen and the plane of the slits is n_(2) . The phase difference between the light waves reaching point O (symmetrical, relative to the slits) is

Light guidance in an optical fiber can be understood by considering a structure comprising of thin solid glass cylinder of refractive index n_(1) surrounded by a medium of lower refractive index n_(2) . The light guidance in the structure takes place due to successive total internal reflections at the interface of the media n_(1) and n_(2) as shown in the figure . all rays with the angle of incidence i less than a particular value of i_(m) are confined in the medium of refractive index n_(1) . The numerical aperture (NA) of the structure is defined as "sin"i_(m) For two structures namely S_(1) with n_(1) = sqrt(45) //4 "and" n_(2) = 3//2 , "and" S_(2) with n_(1) = 8//5 "and" n_(2) = 7//5 and taking the refractive index of water to be 4/3 and that of air to be 1 , the correct option (s) is (are)

KUMAR PRAKASHAN-RAY OPTICS AND OPTICAL INSTRUMENTS-SECTION-D (MULTIPLE CHOICE QUESTIONS (MCQs))(MCQs ASKED IN COMPETITIVE EXAMS)
  1. A telescope has a magnification equal to 5 and the length of its tube ...

    Text Solution

    |

  2. A plano-convex lens of radius of curvature 30 cm and refractive index ...

    Text Solution

    |

  3. If nij is reftactive index of medium i with respect to medium j n21 X ...

    Text Solution

    |

  4. Magnification of microscope of objective of focal length 5 mm is 400. ...

    Text Solution

    |

  5. Refractive index of a prism is root2. One side of prism is polished, i...

    Text Solution

    |

  6. Focal length of convex lens having refractive index 1.5 is 2 cm. If th...

    Text Solution

    |

  7. Minimum deviation of prism having refractive index mu and small angle ...

    Text Solution

    |

  8. For ...... light, focal length of convex lens is maximum.

    Text Solution

    |

  9. Point source of light is placed 4 m below water surface in the medium ...

    Text Solution

    |

  10. A lens is placed between a source of light and a wall . It forms image...

    Text Solution

    |

  11. Light passes through a glass slab of refractive index .n. and thicknes...

    Text Solution

    |

  12. An object is there on a wall. Now by help of convex lens, an image of ...

    Text Solution

    |

  13. As shown in figure, a ray of light is incident on glass cube. If it ex...

    Text Solution

    |

  14. A biconvex lens is cut in such a way that its equal two halves are (i)...

    Text Solution

    |

  15. A mixed ray of red and green colour incidents obilquely on surface of ...

    Text Solution

    |

  16. Diameter of objective of a telescope is 10 cm Its distance from two di...

    Text Solution

    |

  17. Angular resolution of telescope is of order of ...... for 10 cm object...

    Text Solution

    |

  18. A combination is formed by keeping a convex lens in contact with a con...

    Text Solution

    |

  19. A microscope is arranged to observe a mark on a piece of paper clearly...

    Text Solution

    |

  20. Frequency and wavelength of light in transparent material are 2xx10^(1...

    Text Solution

    |