In torches, search lights and headlights of vehicles the bulb is placed
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You are given water, mustard oil, glycerine and kerosene. In which of these media a ray of light incident obliquely at same angle would bend the most?
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The laws of reflection hold good for
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A full length image of a distant tall building can definitely be seen by using
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Under which of the following conditions a concave mirror can form an image larger than the actual object?
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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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Which of the following can make a parallel beam of light when light from a point source is incident on it?
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The image which is formed behind the mirror
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When a plane mirror is rotated through a certain angle, the reflected ray turns through twice as much and the size of the image
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Which of the following can make a parallel beam of light from a point source incident on it?
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A student conducts an activity using a flask of height 15 cm and a concave mirror. He finds that the image formed is 45 cm in height. What is the magnification of the image?
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A student studies that a convex lens always forms a virtual image irrespective of its position. What causes the convex mirror to always form a virtual image?
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