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8th Class Science Light Question Bank Light Formative Subjective Problems

  • question_answer
    A snake is approaching a stationary plane mirror with a speed of 5 m/s. Then it observes that its image is approaching it with a speed of (a) 15 m/s                            (b) 10 m/s (c) 5 m/s              (d) 12 m/s

    Answer:

    Speed of image\[=\left[ V-(-V) \right]=2V\]


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