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12. An object is placed at a distance of 10 cm from a convex mirror of focal lengthis the obje15 cm. Find the position and nature of the image.13. The magnification produced by a plane mirror is +1. What does this mean?langth is placed at a distance of 20 cm in front |
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Answer» Explanation: Answer:- Given that u= -10 cm f= 15 cm We know the formula 1/f = 1/v + 1/u Therefore, 1/v= 1/f – 1/u Substituting the known values in the above equation we get, 1/v= 1/15 + 1/10 1/v = (2+3)/30 (LCM) Hencev=5/30 = 6 cm v= 6cm Nature of the image: The image is formed behind the mirror and it is virtual and erect. Answer:- The magnification produced by a plane mirror is +1 means that the image formed is virtual, erect and of the same size as that of object. |
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