1
JEE Main 2017 (Online) 9th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
A steel rail of length 5 m and area of cross section 40cm2 is prevented from expanding along its length while the temperature rises by 10oC. If coefficient of linear expansion and Young’s modulus of steel are 1.2×10−5 K−1 and 2×1011 Nm−2 respectively, the force developed in the rail is approximately :
A
2 $$ \times $$ 107 N
B
1 $$ \times $$ 105 N
C
2 $$ \times $$ 109 N
D
3 $$ \times $$ 10$$-$$5 N
2
JEE Main 2017 (Online) 9th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
N moles of a diatomic gas in a cylinder are at a temperature T. Heat is supplied to the cylinder such that the temperature remains constant but n moles of the diatomic gas get converted into monoatomic gas. What is the change in the total kinetic energy of the gas ?
A
$${1 \over 2}$$ nRT
B
0
C
$${3 \over 2}$$ nRT
D
$${5 \over 2}$$ nRT
3
JEE Main 2017 (Online) 9th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
For the P-V diagram given for an ideal gas,

JEE Main 2017 (Online) 9th April Morning Slot Physics - Heat and Thermodynamics Question 307 English

out of the following which one correctly represents the T-P diagram ?
A
JEE Main 2017 (Online) 9th April Morning Slot Physics - Heat and Thermodynamics Question 307 English Option 1
B
JEE Main 2017 (Online) 9th April Morning Slot Physics - Heat and Thermodynamics Question 307 English Option 2
C
JEE Main 2017 (Online) 9th April Morning Slot Physics - Heat and Thermodynamics Question 307 English Option 3
D
JEE Main 2017 (Online) 9th April Morning Slot Physics - Heat and Thermodynamics Question 307 English Option 4
4
JEE Main 2017 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
In an experiment, a sphere of aluminium of mass 0.20 kg is heated upto 150oC. Immediately, it is put into water of volume 150 cc at 27oC kept in a calorimeter of water equivalent to 0.025 kg. Final temperature of the system is 40oC. The specific heat of aluminium is : (take 4.2 Joule = 1 calorie)
A
378 J/kg $$-$$oC
B
315 J/kg $$-$$oC
C
476 J/kg $$-$$oC
D
434 J/kg $$-$$oC
JEE Main Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12