Large number of thin stripes of black paint are made on the surface of a convex lens of focal length 20 cm to catch the image of a white horse. The image will be
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In which of the following, the image of an object placed at infinity will be highly diminished and point sized?
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In torches, search lights and headlights of vehicles the bulb is placed
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A full-length image of a distant tall building can definitely be seen by using
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Magnification is produced by a rearview mirror fitted in vehicles
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You are given three media A, B and C of refractive index 1.33, 1.65 and 1.46. The medium in which the light will travel fastest is
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A 10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. The focal length of this mirror is
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A magnified real image is formed by a convex lens when the object is at
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When object moves closer to a concave lens the image by it shift
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When object moves closer to convex lens, the image formed by it shift
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A divergent lens will produce
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Light from the Sun falling on a convex lens will converge at a point called
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