Two identical thin plano-convex glass lenses (refractive index 1.5) each having radius of curvature of 20...
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Two identical thin plano-convex glass lenses (refractive index 1.5) each having radius of curvature of 20 cm are placed with their convex surfaces in contact at the centre. The intervening space is filled with oil of refractive index 1.7. The focal length of the combination is (a) -25 cm (c) 50 cm (b)-50 cm (d) -20 cm Two identical thin plano-convex glass lenses (refractive index 1.5) each having radius of curvature of 20 cm are placed with their convex surfaces in contact at the centre. The intervening space is filled with oil of refractive index 1.7. The focal length of the combination is (a) -25 cm (c) 50 cm (b)-50 cm (d) -20 cm
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Related Book For
College Physics
ISBN: 978-0495113690
7th Edition
Authors: Raymond A. Serway, Jerry S. Faughn, Chris Vuille, Charles A. Bennett
Posted Date:
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