1
MHT CET 2023 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In a parallel plate capacitor with air between the plates, the distance $$d$$ between the plates is changed and the space is filled with dielectric constant 8. The capacity of the capacitor is increased 16 times, the distance between the plates is

A
2d
B
4d
C
d/2
D
d/4
2
MHT CET 2023 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A ray of light passes through an equilateral prism such that the angle of incidence $$(i)$$ is equal to angle of emergence $$(e)$$. The angle of emergence is equal to $$\left(\frac{3}{4}\right)$$th the angle of prism. The angle of deviation is

A
$$20^{\circ}$$
B
$$30^{\circ}$$
C
$$39^{\circ}$$
D
$$45^{\circ}$$
3
MHT CET 2023 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The radii of curvature of both the surfaces of a convex lens of focal length $$f$$ and power $$P$$ are equal. One of the surfaces is made by plane grinding. The new focal length and focal power of the lens is

A
$$\frac{2}{3} f, \frac{2}{3} P$$
B
$$\sqrt{\frac{2}{f}}, \sqrt{\frac{P}{2}}$$
C
$$\frac{f}{2}, 2 P$$
D
$$2 f, \frac{P}{2}$$
4
MHT CET 2023 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A spring balance is attached to the ceiling of a lift. A man hangs his bag on the spring and the spring balance reads $$49 \mathrm{~N}$$, when the lift is stationary. If the lift moves downward with an acceleration of $$5 \mathrm{~m} / \mathrm{s}^2$$, the reading of the spring balance will be $$\left(g=9.8 \mathrm{~m} / \mathrm{s}^2\right)$$

A
15 N
B
24 N
C
49 N
D
74 N
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