Radiocarbon is produced in the atmosphere as a result of

Dec 13th, 2014
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Question description


It is easier to roll a stone up a sloping road than to lift it vertical upwards because done in rolling is more than in lifting done in lifting the stone is equal to rolling it done in both is same but the rate of doing work is less in rolling done in rolling a stone is less than in lifting it


The absorption of ink by blotting paper involves

A.viscosity of ink
B.capillary action phenomenon
C.diffusion of ink through the blotting
D.siphon action

Siphon will fail to work if

A.the densities of the liquid in the two vessels are equal
B.the level of the liquid in the two vessels are at the same height
C.both its limbs are of unequal length
D.the temperature of the liquids in the two vessels are the same

Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to

A.the heating effect of current alone
B.hysteresis loss alone
C.both the heating effect of current and hysteresis loss
D.intense sunlight at noon

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(Top Tutor) Syedali A
School: New York University

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