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[" 4) A concave lens has focal length of...

[" 4) A concave lens has focal length of 20cm.At what distance from the lens a "5cr],[" tall object be placed so that it forms an image at "5cm" from the lens? Also "],[" calculate the size of the image formed."]

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A concave lens has focal lengths of 20 cm. At what distance from the lens a 5cm tall object be placed so that it forms an image at 15 cm from the lens ? Also calculate the size of the image formed.

A concave lens has focal length of 20 cm . At what distance from the lens a 5 cm tall object be placed so that it forms an image at 15 cm from the lens? Also, calculate the size of the image formed.

A concave lens has focal length of 20 cm . At what distance from the lens a 5 cm tall object be placed so that it forms an image at 15 cm from the lens ? Calculate the size of the image formed.

A concave lens has focal length of 15 cm. At what distance should an object from the lens be placed so that it forms an image at 10 cm from the lens ? Also, find the magnification of the lens.

A concave lens has focal length of 15 cm. At what distance should an object from the lens be placed so that it forms an image at 10 cm from the lens ? Also, find the magnification of the lens.