1

JEE Main 2020 (Online) 8th January Evening Slot

Numerical

+4

-0

Three containers C

_{1}, C_{2}and C_{3}have water at different temperatures. The table below shows the final temperature T when different amounts of water (given in litres) are taken from each containers and mixed (assume no loss of heat during the process) The value of $$\theta $$ (in °C to the nearest integer) is ..........Your input ____

2

JEE Main 2020 (Online) 7th January Evening Slot

Numerical

+4

-0

M grams of steam at 100

^{o}C is mixed with 200 g of ice at its melting point in a thermally insulated container. If it produced liquid water at 40^{o}C [heat of vaporization of water is 540 cal/g and heat of fusion of ice is 80 cal/g] the value of M is ____Your input ____

3

JEE Main 2020 (Online) 7th January Morning Slot

Numerical

+4

-0

A non-isotropic solid metal cube has coefficients of linear expansion as :

5 $$ \times $$ 10

5 $$ \times $$ 10

^{-5}/^{o}C along the x-axis and 5 $$ \times $$ 10^{-6}/^{o}C along the y and the z-axis. If the coefficient of volume expansion of the solid is C $$ \times $$ 10^{-6}/^{o}C then the value of C isYour input ____

4

JEE Main 2020 (Online) 7th January Morning Slot

Numerical

+4

-0

Out of Syllabus

A Carnot engine operates between two reservoirs of temperatures 900 K and 300 K. The engine
performs 1200 J of work per cycle. The heat energy (in J) delivered by the engine to the low
temperature reservoir, in a cycle, is _______.

Your input ____

Questions Asked from Heat and Thermodynamics (Numerical)

Number in Brackets after Paper Indicates No. of Questions

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