1
MHT CET 2023 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

An air craft of wing span $$40 \mathrm{~m}$$ files horizontally in earth's magnetic field $$5 \times 10^{-5} \mathrm{~T}$$ at a speed of $$500 \mathrm{~m} / \mathrm{s}$$. The e.m.f. generated between the tips of the wings of the air craft is

A
0.5 V
B
1 V
C
1.2 V
D
1.5 V
2
MHT CET 2023 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In $$\mathrm{P}^{\text {th }}$$ second, a particle describes angular displacement of '$$\beta$$' rad. If it starts from rest, the angular acceleration is

A
$$\frac{\beta}{P}$$
B
$$\frac{\beta}{(\mathrm{P}-1)}$$
C
$$\frac{2 \beta}{(2 \mathrm{P}-1)}$$
D
$$\frac{(2 \beta+1)}{(2 \mathrm{P}-1)}$$
3
MHT CET 2023 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Inductance per unit length near the middle of a long solenoid is $$\left(\mu_0=\right.$$ permeability of free space, $$\mathrm{n}=$$ number of turns per unit length, $$\mathrm{d}=$$ the diameter of the solenoid)

A
$$\mu_0 \pi\left(\frac{\mathrm{nd}}{2}\right)^2$$
B
$$4 \mu_0 \pi\left(\frac{\mathrm{nd}}{2}\right)$$
C
$$\left(\frac{\mu_0 \pi n d}{2}\right)$$
D
$$\frac{4 \mu_0 \pi}{\mathrm{n}^2 \mathrm{~d}^2}$$
4
MHT CET 2023 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

One of the slits in Young's double slit experiment is covered with a transparent sheet of thickness $$2.9 \times 10^{-3} \mathrm{~cm}$$. The central fringe shifts to a position originally occupied by the $$25^{\text {th }}$$ bright fringe. If $$\lambda=5800$$ $$\mathop A\limits^o $$, the refractive index of the sheet is

A
1.65
B
1.60
C
1.55
D
1.50
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