1
VITEEE 2025
MCQ (Single Correct Answer)
+4
-1

Capacity of a parallel plate capacitor in the absence of dielectric medium is $C_0$. A sheet of dielectric constant $k$ and thickness of one-fourth of the plate separation is inserted between the plates. If the new capacity is $C$, then $\frac{C}{C_0}$ is

A

$\frac{3 k+1}{2 k}$

B

$\frac{3 k+1}{4 k}$

C

$\frac{2 k}{3 k+1}$

D

$\frac{4 k}{3 k+1}$

2
VITEEE 2025
MCQ (Single Correct Answer)
+4
-1

Which of the following statement is correct regarding the AC circuit shown in the adjacent figure?

VITEEE 2025 Physics - Alternating Current Question 1 English
A

The rms value of current through the circuit is $i_{\text {rms }}=5 \sqrt{2} \mathrm{~A}$

B

The phase difference between source emf and current is $\phi=\cos ^{-1}\left(\frac{1}{3}\right)$

C

Average power dissipated in the circuit is 500 W

D

None of the above

3
VITEEE 2025
MCQ (Single Correct Answer)
+4
-1

The height $y$ and the distance $x$ along the horizontal plane of a projectile on a certain planet (with no surrounding atmosphere) are given by $y=8 t-5 t^2 \mathrm{~m}$ and $x=6 t \mathrm{~m}$, where $t$ is in seconds. The velocity with which the projectile is projected is

A

$6 \mathrm{~ms}^{-1}$

B

$8 \mathrm{~ms}^{-1}$

C

$10 \mathrm{~ms}^{-1}$

D

$14 \mathrm{~ms}^{-1}$

4
VITEEE 2025
MCQ (Single Correct Answer)
+4
-1

A ball is projected horizontally with a velocity of $5 \mathrm{~ms}^{-1}$ from the top of a building 19.6 m high. How long will the ball take to hit the ground?

A

$\sqrt{2} \mathrm{~s}$

B

2 s

C

$\sqrt{3} \mathrm{~s}$

D

3 s

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