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Question 37: NCERT Solutions for 12th Class Physics: Chapter 9-Ray Optics and Optical Instruments

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Question 37: NCERT Solutions for 12th Class Physics: Chapter 9-Ray Optics and Optical Instruments

Light incident normally on a plane mirror attached to a galvanometer coil retraces backwards as shown in figure. A current in the coil produces a deflection of 3.5° of the mirror. What is the displacement of the reflected spot of light on a screen placed 1.5 m away?

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  1. Solution:
    If the mirror deflect by 3.5°, the reflected light deflect by 7°, deflection of the spot d can be calculated.

    Check the complete chapter with solutions.

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