Question: 1. An upright object is 50cm from a converging lens of focal length 30cm. The image distance from the lens is.... Show the sketch 2.

1. An upright object is 50cm from a converging lens of focal length 30cm. The image distance from the lens is.... Show the sketch 2. An upright object 3.0cm high is 20cm from the left of a concave mirror whose radius of curvature R = 30cm. Find image height, its distance from the mirror and magnification. 3. A beam of light in air is incident at an angle of 25 0 to the surface of a rectangular block of clear plastic( n=1.5).The light beam first passes through the block and reemerges from the opposite side into air, at what angle normal to that surface?

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