1
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
$$\frac{4 \mu_0 \pi}{\mathrm{n}^2 \mathrm{~d}^2}$$
2
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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