1
MHT CET 2021 23th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

An electron is projected along the axis of circular conductor carrying current '$$\mathrm{I}$$' The electron will experience

A
a force perpendicular to axis
B
a force along the axis
C
a force at angle $$30^{\circ}$$ with the axis
D
no force
2
MHT CET 2021 23th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

A thin ring of radius '$$R$$' meter has charge '$$q$$' coulomb uniformly spread on it. The ring rotates about its axis with a constant frequency of $$f$$ revolution/s. The value of magnetic induction in $$\mathrm{Wb} \mathrm{m}^{-2}$$ at the center of the ring is ($$\mu_0=$$ Permeability of free space)

A
$$\frac{\mu_0 \mathrm{qf}}{2 \pi \mathrm{R}}$$
B
$$\frac{\mu_0 q}{2 \pi R}$$
C
$$\frac{\mu_0 q f}{2 R}$$
D
$$\frac{\mu_0 q}{2 \pi f R}$$
3
MHT CET 2021 23th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

A charged spherical conductor has radius '$$r$$'. The potential difference between its surface and 3 point at a distance '$$3 r$$' from the centre is '$$v$$' The electric intensity at a distance '$$3 r$$' from the centre of the conductor is

A
$$\frac{v}{8 r}$$
B
$$\frac{v}{2 r}$$
C
$$\frac{v}{4 r}$$
D
$$\frac{v}{6 r}$$
4
MHT CET 2021 23th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

In biprims experiment, the $$4^{\text {th }}$$ dark band is formed opposite to one of the slits. The wavelength of light used is $$(\mathrm{d}=$$ distance between the slits, $$\mathrm{D}=$$ distance between scource and the screen)

A
$$\frac{\mathrm{d}^2}{14 \mathrm{D}}$$
B
$$\mathrm{\frac{d^2}{7 D}}$$
C
$$\frac{d^2}{9 \mathrm{D}}$$
D
$$\frac{d^2}{11 \mathrm{D}}$$
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