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JEE Main 2022 (Online) 29th June Morning Shift
Numerical
+4
-1 English
Hindi

As per the given figure, two plates A and B of thermal conductivity K and 2 K are joined together to form a compound plate. The thickness of plates are 4.0 cm and 2.5 cm respectively and the area of cross-section is 120 cm2 for each plate. The equivalent thermal conductivity of the compound plate is $$\left( {1 + {5 \over \alpha }} \right)$$ K, then the value of $$\alpha$$ will be ______________. 2
JEE Main 2022 (Online) 29th June Morning Shift
Numerical
+4
-1 English
Hindi

300 cal. of heat is given to a heat engine and it rejects 225 cal. If source temperature is 227$$^\circ$$C, then the temperature of sink will be ______________ $$^\circ$$C.

3
JEE Main 2022 (Online) 28th June Morning Shift
Numerical
+4
-1 English
Hindi

The total internal energy of two mole monoatomic ideal gas at temperature T = 300 K will be _____________ J. (Given R = 8.31 J/mol.K)

4
JEE Main 2022 (Online) 27th June Evening Shift
Numerical
+4
-1 English
Hindi

A diatomic gas ($$\gamma$$ = 1.4) does 400J of work when it is expanded isobarically. The heat given to the gas in the process is __________ J.