1
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In Young's double slit experiment, green light is incident on two slits. The interference pattern is observed on a screen. Which one of the following changes would cause the observed fringes to be more closely spaced?

A
Reducing the separation between the slits
B
Using blue light instead of green light
C
Using red light instead of green light
D
Moving the screen away from the slits
2
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Two batteries, one of e.m.f. $$12 \mathrm{~V}$$ and internal resistance $$2 \Omega$$ and other of e.m.f. $$6 \mathrm{~V}$$ and internal resistance $$1 \Omega$$, are connected as shown in the figure. What will be the reading of the voltmeter 'V'?

MHT CET 2023 11th May Evening Shift Physics - Current Electricity Question 77 English

A
12 V
B
8 V
C
6 V
D
4 V
3
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Potential difference between the points P and Q is nearly

MHT CET 2023 11th May Evening Shift Physics - Current Electricity Question 84 English

A
17 V
B
14 V
C
12 V
D
8 V
4
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A coil having effective area '$$A$$' is held with its plane normal to a magnitude field of induction '$$\mathrm{B}$$'. The magnetic induction is quickly reduced to $$25 \%$$ of its initial value in 1 second. The e.m.f. induced in the coil (in volt) will be

A
$$\frac{\mathrm{BA}}{4}$$
B
$$\frac{\mathrm{BA}}{2}$$
C
$$\frac{3 \mathrm{BA}}{8}$$
D
$$\frac{3 \mathrm{BA}}{4}$$
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