1
MHT CET 2025 5th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A coil having ' $N$ ' turns and resistance ' $R$ ' $\Omega$ is connected to a galvanometer of resistance ' 6 R ' $\Omega$. The magnetic flux linked with this coil changes from $\phi_1$ weber to $\phi_2$ weber in time ' t ' second. The induced current in the circuit is

A

$\frac{\mathrm{N}\left(\phi_2-\phi_1\right)}{\mathrm{t}}$

B

$\frac{N\left(\phi_2-\phi_1\right)}{7 R t}$

C

$\frac{\mathrm{N}\left(\phi_2-\phi_1\right)}{\mathrm{Rt}}$

D

$\frac{N\left(\phi_2-\phi_1\right)}{6 R t}$

2
MHT CET 2025 5th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Energy of the incident photons on the metal surface is initially 4 W and then 6 W where $W$ is the work function of that metal. The ratio of velocities of emitted photoelectrons is

A

$\sqrt{3}: \sqrt{5}$

B

$1: 2$

C

$2: 3$

D

$\sqrt{2}: \sqrt{3}$

3
MHT CET 2025 5th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
The distance between two consecutive points with phase difference of $45^{\circ}$ in a wave of frequency 300 Hz is 4.0 m . The velocity of the travelling wave is (in $\mathrm{km} / \mathrm{s}$ )
A

1.6

B

3.6

C

4.8

D

9.6

4
MHT CET 2025 5th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A ball is dropped on the floor from a height of 20 m . It rebounds to a height of 5 m . Ball remains in contact with floor for 1 s . The average acceleration during contact is (acceleration due to gravity $=10 \mathrm{~m} / \mathrm{s}^2$ )

A

$30 \mathrm{~m} / \mathrm{s}^2$

B

$20 \mathrm{~m} / \mathrm{s}^2$

C

$40 \mathrm{~m} / \mathrm{s}^2$

D

$35 \mathrm{~m} / \mathrm{s}^2$

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