Q321
Open questionWhen a ring of metal is heated what happens to its hole ?
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Q322
Open questionThe earth is a
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Q323
Open questionWhen temperature difference between liquid and its surroundings is doubled, the rate of loss of heat will:
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Q324
Open questionThe word ''insolation' means
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Q325
Open questionTap water is placed in an open pad and allowed to evaporate. After some time the temperature of water
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Q326
Open questionHeat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in
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Q327
Open questionEnergy travels from Sun to Earth through
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Q328
Open questionWhich best describes how air moves during convection?
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Q329
Open questionWhen does land breeze occur?
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Q330
Open questionThe cooling by a desert Cooler is based on:
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Q331
Open questionWhen a bullet is fired from a gun
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Q332
Open questionThe inability of a body to change its state of rest or uniform motion along a straight line is called its
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Q333
Open questionThe moment of inertia of a body does not depend upon its
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Q334
Open questionAn athlete runs before long jump to get advantage on
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Q335
Open questionWhat is the gravity of moon as compared to the Earth
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Q336
Open questionWhen a card placed over a tumbler is flicked with the finger, the coin placed over it falls in the tumbler.
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Q337
Open questionAccording to the Second Law of Motion, for a given force, acceleration is inversely proportional to the ________ of an object.
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Q338
Open questionWhy does a cannon recoil after firing ?
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Q339
Open questionWhen a constant force acts on an object with a mass of 8 kg for a duration of 3 s. it increases the object's velocity from 4 m/s to 6 m/s . What is the magnitude of the applied force?
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Q340
Open questionA body of mass 5 kg accelerates from 12 m/s to 20 m/s in 4 seconds due to the application of a force on it. Calculate the magnitude of this force (in N).
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