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Q. The type of mirrors used in the headlamp of cars is
A concave mirror is used in the headlight of a car. The reason being that a concave mirror is a converging mirror as opposed to a convex mirror which is a diverging mirror. In headlights the bulb is kept at the focus of the mirror.
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Q. A student’s 9.0 V, 7.5W portable radio was left on from 9:00 P.M. until 3:00 A.M. How much cha...
Q. For which one of the following is Planimeter used?
Q. To produce deflection in a television picture tube
Q. The rice is cooked more quickly in a pressure cooker as
Q. The velocity of sound in moist air is more than in dry air because the moist air has
Q. In a pressure cooker cooking is faster because the increase in vapour pressure
Q. The main advantage of AC transmission system over DC transmission system is ?
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