1
COMEDK 2026 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following statements is/are true?

(A) Three vectors not lying in a plane give zero resultant

(B) Three vectors lying in a plane can give zero resultant

(C) Two vectors of different magnitude can be combined to give a zero resultant

A

Statements (B) and (C)

B

Statements (A) and (C)

C

Statement (B)

D

Statement (A)

2
COMEDK 2026 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

Bodies $P, Q, R, S$ are labelled as having charges $Q_P=0.5 \times 10^{-19} C, Q_Q=0.7 \times 10^{-19} C$, $Q_R=2.1 \times 10^{-19} C, Q_S=4.8 \times 10^{-19} C$ respectively.

Select the body having the correct charge.

[Given electronic charge $=e=1.6 \times 10^{-19} \mathrm{C}$ ]

A

$Q_Q=0.7 \times 10^{-19} C$

B

$Q_P=0.5 \times 10^{-19} C$

C

$Q_R=2.1 \times 10^{-19} C$

D

$Q_s=4.8 \times 10^{-19} C$

3
COMEDK 2026 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

When metal of work function 1.4 eV is exposed to a radiation, the maximum kinetic energy of the electron emitted is 0.4 eV . The stopping potential required is:

A

1.4 V

B

2.8 V

C

0.4 V

D

0.2 V

4
COMEDK 2026 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

Following graph shows four different processes, adiabatic, isothermal, isobaric and isochoric for an ideal gas, from the same initial state. Study the graph carefully and state which of the following statements is correct?

COMEDK 2026 Afternoon Shift Physics - Heat and Thermodynamics Question 1 English
A

Process 2 is isobaric

B

Process 3 isochoric

C

Process 1 is isochoric

D

Process 4 is adiabatic