1
AP EAPCET 2025 - 26th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The elastic potential energy stored in a copper rod of length one metre and area of cross-section $1 \mathrm{~mm}^2$ when stretched by 1 mm is

(Young's modulus of copper $=1.2 \times 10^{11} \mathrm{Nm}^{-2}$ )

A

$6 \times 10^{-2} \mathrm{~J}$

B

$3 \times 10^{-2} \mathrm{~J}$

C

60 J

D

3 J

2
AP EAPCET 2025 - 26th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

When the temperature increases, the viscosity of

A

gases decreases but liquids increases

B

gases increases but liquids decreases

C

both gases and liquids increases

D

both gases and liquids decreases

3
AP EAPCET 2025 - 26th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If a body cools from a temperature of $62^{\circ} \mathrm{C}$ to $50^{\circ} \mathrm{C}$ in 10 minutes and to $42^{\circ} \mathrm{C}$ in the next 10 minutes, then the temperature of the surroundings is

A

$12^{\circ} \mathrm{C}$

B

$26^{\circ} \mathrm{C}$

C

$36^{\circ} \mathrm{C}$

D

$21^{\circ} \mathrm{C}$

4
AP EAPCET 2025 - 26th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If the ratio of universal gas constant and specific heat capacity at constant volume of a gas is given by 0.67 , then the gas is

A

monoatomic

B

diatomic

C

polyatomic

D

a mixture of diatomic and polyatomic gases