1
AIIMS 2017
MCQ (Single Correct Answer)
+1
-0.33

The coefficient of cubical expansion of mercury is $$0.00018 /{ }^{\circ} \mathrm{C}$$ and that of brass $$0.00006 /{ }^{\circ} \mathrm{C}$$. If a barometer having a brass scale were to read $$74.5 \mathrm{~cm}$$ at $$30^{\circ} \mathrm{C}$$, find the true barometric height at $$0^{\circ} \mathrm{C}$$. The scale is supposed to be correct at $$15^{\circ} \mathrm{C}$$.

A
$$74.122 \mathrm{~cm}$$
B
$$79.152 \mathrm{~cm}$$
C
$$42.161 \mathrm{~cm}$$
D
$$142.39 \mathrm{~cm}$$
2
AIIMS 2017
MCQ (Single Correct Answer)
+1
-0.33

One mole of an ideal diatomic gas undergoes transition from A to B along a path AB as shown below.

AIIMS 2017 Physics - Heat and Thermodynamics Question 2 English

The change in internal energy of the gas during the transition is

A
20 kJ
B
$$-$$12 kJ
C
$$-$$20 kJ
D
20 J
3
AIIMS 2017
MCQ (Single Correct Answer)
+1
-0.33

Assertion : It is hotter over the top of a fire than at the same distance on the sides.

Reason : In the upward direction, the heat propagate through convection.

A
Both assertion and reason are true and reason is the correct explanation of assertion
B
Both assertion and reason are true but reason is not the correct explanation of assertion
C
Assertion is true but reason is false
D
Both assertion and reason are false.
4
AIIMS 2017
MCQ (Single Correct Answer)
+1
-0.33

Assertion : In adiabatic expansion the product of $$p$$ and $$V$$ always decreases.

Reason : In adiabatic expansion process, work is done by the gas at the cost of internal energy of gas.

A
Both assertion and reason are true and reason is the correct explanation of assertion
B
Both assertion and reason are true but reason is not the correct explanation of assertion
C
Assertion is true but reason is false
D
Both assertion and reason are false.
AIIMS Subjects
EXAM MAP