Question 9 A Point object is placed at a distance of 10 cm and its real image is formed at a distace of 30 cm from a concave mirror. If the object is moved by 0.2 cm towards the mirror, the image will shift by about.
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We have a concave mirror which has u = initial distance = 20cm and v = final distance = 10cm. So, the focal length of the mirror is 203cm. Now, according to the question, when the object moves 0.1cm toward the mirror then XY is the object at a distance 9.9cm and X′Y′ is the image. The final distance will become 20.4cm
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