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

With the gradual increase in frequency of an a. c. source, the impedance of an LCR series circuit

A
first decreases, becomes minimum and then increases.
B
increases.
C
decreases.
D
remains constant.
2
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In energy band diagram of insulators, a band gap and the conduction band is respectively

A
very low and partially filled.
B
very high and completely filled.
C
very high and empty.
D
very low and empty.
3
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Two positively charged identical spheres separated by a distance 'd' exert some force (F) on each other when they are kept in air. If both the spheres are immersed in a liquid of dielectric constant 5 , the force experienced by each is (All other parameters are unchanged.)

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

A string fixed at both the ends forms standing wave with node separation of $$5 \mathrm{~cm}$$. If the velocity of the wave on the string is $$2 \mathrm{~m} / \mathrm{s}$$, then the frequency of vibration of the string is

A
0.2 Hz
B
10 Hz
C
20 Hz
D
40 Hz
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