A point object is located at a distance of 15 cm from a screen a lens of focal length 23 CM mounted on a movable frictionless stand is kept between the source and the screen The Stand is attached to a spring of natural and 50 cm Spring Constant 800 Newton per metre as shown in figure mass of the stand with lens is 2kg how much impulse should be imparted to the Stan so that a real image of the object from on the screen after a fixed time
Answers
Answer:
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Explanation:
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