1
MHT CET 2021 20th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

A uniformly charged half ring of a radius ' $R$ ' has linear charge density '$$\sigma$$'. The electric potential at the centre of the half ring is ( $$\epsilon_0=$$ permittivity of free space)

A
$$\frac{\sigma}{6 \epsilon_0}$$
B
$$\frac{\sigma}{2 \epsilon_0}$$
C
$$\frac{\sigma}{\epsilon_0}$$
D
$$\frac{\sigma}{4 \epsilon_0}$$
2
MHT CET 2021 20th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

A spherical conducting shell of inner radius 'r$$_1$$' and outer radius 'r$$_2$$' has a charge 'Q'. A charge $$-$$q is placed at the centre of the shell. The surface charge density on the inner and outer surface of the shell will be

MHT CET 2021 20th September Morning Shift Physics - Electrostatics Question 77 English

A
$$\frac{q}{4 \pi r_1^2}$$ and $$\frac{\mathrm{Q}-\mathrm{q}}{4 \pi \mathrm{r}_2^2}$$
B
$$\frac{q}{4 \pi r_1^2}$$ and $$\frac{Q}{4 \pi r_2^2}$$
C
$$\frac{-q}{4 \pi r_1^2}$$ and $$\frac{Q+q}{4 \pi r_2^2}$$
D
zero and $$\frac{\mathrm{Q}-\mathrm{q}}{4 \pi \mathrm{r}_2^2}$$
3
MHT CET 2021 20th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

A charge of magnitude '2e' and mass '4m' is moving in an electric field $$\overrightarrow E $$. The acceleration imparted to the above charge is

A
$$\mathrm{\frac{2m}{3Ee}}$$
B
$$\mathrm{\frac{Ee}{2m}}$$
C
$$\mathrm{\frac{2Ee}{3m}}$$
D
$$\mathrm{\frac{3m}{2Ee}}$$
4
MHT CET 2020 19th October Evening Shift
MCQ (Single Correct Answer)
+1
-0

Van de Graaff generator produces

A
high voltage and high current
B
high voltage and low current
C
low voltage and low current
D
low voltage and high current
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