A small object placed in front of a concave spherical mirror gives an image that is real and four times the size of the object. When the object is moved 10 cm towards a mirror a virtual image of same magnification is formed. Find the focal length of the mirror with proper diagram
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A small object placed in front of a concave spherical mirror gives an image that is real and four times the size of the object. When the object is moved 10 cm towards a mirror a virtual image of same magnification is formed. Find the focal length of the mirror with proper diagram. Answer: 20 cm
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A small object placed in front of a concave spherical mirror gives an image that is real and four times the size of the object. When the object is moved 10 cm towards a mirror a virtual image of same magnification is formed. Find the focal length of the mirror with proper diagram. [ Answer: 20 cm }
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