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

When a metallic surface is illuminated with radiation of wavelength '$$\lambda$$', the stopping potential is '$$\mathrm{V}$$'. If the same surface is illuminated with radiation of wavelength '$$2 \lambda$$', the stopping potential is '$$\left(\frac{\mathrm{v}}{4}\right)$$'. The threshold wavelength for the metallic surface is

A
$$\frac{5}{2} \lambda$$
B
$$3 \lambda$$
C
$$4 \lambda$$
D
$$5 \lambda$$
2
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Three identical capacitors of capacitance '$$\mathrm{C}$$' each are connected in series and this connection is connected in parallel with one more such identical capacitor. Then the capacitance of whole combination is

A
$$3 \mathrm{C}$$
B
$$2 \mathrm{C}$$
C
$$\frac{4}{3} \mathrm{C}$$
D
$$\frac{3}{4} \mathrm{C}$$
3
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
4
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 30 English

A
12 V
B
8 V
C
6 V
D
4 V
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