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1
JEE Main 2021 (Online) 20th July Morning Shift
Numerical
+4
-1
In the reported figure, heat energy absorbed by a system in going through a cyclic process is ___________ $$\pi$$J.

JEE Main 2021 (Online) 20th July Morning Shift Physics - Heat and Thermodynamics Question 124 English
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2
JEE Main 2021 (Online) 18th March Morning Shift
Numerical
+4
-1
Two separate wires A and B are stretched by 2 mm and 4 mm respectively, when they are subjected to a force of 2 N. Assume that both the wires are made up of same material and the radius of wire B is 4 times that of the radius of wire A. The length of the wires A and B are in the ratio of a : b. Then a/b can be expressed as 1/x where x is _________.
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3
JEE Main 2021 (Online) 16th March Evening Shift
Numerical
+4
-1
For an ideal heat engine, the temperature of the source is 127$$^\circ$$C. In order to have 60% efficiency the temperature of the sink should be ___________$$^\circ$$C. (Round off to the Nearest Integer)
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4
JEE Main 2021 (Online) 26th February Evening Shift
Numerical
+4
-1
1 mole of rigid diatomic gas performs a work of $${Q \over 5}$$ when heat Q is supplied to it. The molar heat capacity of the gas during this transformation is $${xR \over 8}$$. The value of x is _________. [R = universal gas constant]
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