1
KCET 2026
MCQ (Single Correct Answer)
+1
-0
A source of frequency $\nu$ gives $6$ beats/second when sounded with a source of frequency $200$ Hz. The second Harmonic of frequency $2\nu$ of the source gives $8$ beats/second when sounded with a source of frequency $420$ Hz. The value of $\nu$ is
A
$205$ Hz
B
$206$ Hz
C
$195$ Hz
D
$210$ Hz
2
KCET 2026
MCQ (Single Correct Answer)
+1
-0
A $200$ J of work is done in moving a charge $5$ C from a point A where the potential is $-20$ V to another point B where potential is V volt. The value of V at B is
A
$10$ V
B
$20$ V
C
$40$ V
D
$60$ V
3
KCET 2026
MCQ (Single Correct Answer)
+1
-0
An electric dipole of dipole moment $\vec{P}$ is placed in the uniform electric field $\vec{E}$. Then which of the following statements are correct?
Statement-I: The torque on the dipole is $\vec{P} \times \vec{E}$
Statement-II: The potential energy of the dipole is $-\vec{P} \cdot \vec{E}$
Statement-III: The net force on the dipole is non-zero.
A
I, II and III
B
I and II only
C
II and III only
D
I and III only
4
KCET 2026
MCQ (Single Correct Answer)
+1
-0
Consider three point charges $-2Q, Q$ and $-Q$ and three surfaces $S_1, S_2$ and $S_3$ as shown in the figure. Match the entries of List-I with that of List-II.

List-IList-II
(a) Net flux through $S_1$(i) $\dfrac{-2Q}{\varepsilon_0}$
(b) Net flux through $S_2$(ii) $\dfrac{-Q}{\varepsilon_0}$
(c) Net flux through $S_3$(iii) Zero
A
a - ii, b - i, c – iii
B
a - iii, b - ii, c – i
C
a - i, b - ii, c – iii
D
a - ii, b - iii, c – i