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Question 16: NCERT Solutions for 12th Class Physics: Chapter 9-Ray Optics and Optical Instruments

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Question 16: NCERT Solutions for 12th Class Physics: Chapter 9-Ray Optics and Optical Instruments

A small pin fixed on a table top is viewed from above from a distance of 50 cm. By what distance would the pin appear to be raised if it is viewed from the same point through a 15 cm thick glass slab held parallel to the table? Refractive index of glass = 1.5. Does the answer depend on the location of the slab?

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  1. Solution:
    The shift in the image by the thick glass slab can be calculated. Here, shift only depend upon thickness of glass slab and refractive index of glass.
    Shift = Real thickness – Apparent of thickness

    The answer does not depend on the location of the slab.

    Check the complete chapter with solutions.

    NCERT Solutions for 12th Class Physics: Chapter 9-Ray Optics and Optical Instruments