1
VITEEE 2021
MCQ (Single Correct Answer)
+1
-0

A hollow sphere of radius $$0.1 \mathrm{~m}$$ has a charge of $$5 \times 10^{-8} \mathrm{C}$$. The potential at a distance of 5 $$\mathrm{cm}$$ from the centre of the sphere is $$\left(\frac{1}{4 \pi \varepsilon_0}=9 \times 10^9 \mathrm{Nm}^2 \mathrm{C}^{-2}\right)$$

A
4000 V
B
4500 V
C
5000 V
D
6000 V
2
VITEEE 2021
MCQ (Single Correct Answer)
+1
-0

The efficiency of a Carnot engine kept at the temperatures of $$27^{\circ} \mathrm{C}$$ and $$127^{\circ} \mathrm{C}$$ is

A
20%
B
25%
C
30%
D
40%
3
VITEEE 2021
MCQ (Single Correct Answer)
+1
-0

According to equipartition law of energy each particle in a system of particles have thermal energy $$E$$ equal to

A
$$E=k_B T$$
B
$$E=(1 / 2) k_B T$$
C
$$E=3 k_B T$$
D
$$E=(3 / 2) k_B T$$
4
VITEEE 2021
MCQ (Single Correct Answer)
+1
-0

An electric charge does not have which of the following properties?

A
Total charge conservation
B
Quantisation of charge
C
Two type of charge
D
Circular line of force
EXAM MAP