Q100. Under Rutherford’s atomic model, which description best fits the nucleus? [RRB Group D (20 August 2026, Shift 1)] (A) A broad …
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Q40. Two conducting wires of the same material have lengths L and 1.2L. If the longer wire has half the volume of …
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Q100. How much electrical energy is consumed when a 1 kW appliance operates for one hour? [RRB Group D — 18 August …
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Q100. Consider these statements about sound: I. Sound speed decreases with increasing temperature at constant atmospheric pressure. II. It increases with humidity. …
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Q60. If the frequency of a sound wave increases while its speed in air remains constant, what happens to its wavelength? [RRB …
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100. An insulated vessel initially has 250 g water at 20°C. Steam at 100°C heats it to 25°C and the water mass …
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Q160. In a concave mirror, a ray is incident parallel to the principal axis. After reflection, the ray passes through the _______. …
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Q60. When water is poured slowly from a jug and clings to its side, which property chiefly accounts for this behaviour? [UPSC …
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Q60. Why is the work done by gravity negative while a body is being lifted? [RRB Group D — 18 Aug 2026, …
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Q60. On a level circular cycling track of radius 10 m, riders P, Q and R travel at 2, 3 and 5 …