Mechanics
Units & Measurement and Dimensions
MCQ (Single Correct Answer)
Motion in a Straight Line
MCQ (Single Correct Answer)
Work, Energy and Power
MCQ (Single Correct Answer)
Center of Mass and Collision
MCQ (Single Correct Answer)
Simple Harmonic Motion
MCQ (Single Correct Answer)
Heat and Thermodynamics
MCQ (Single Correct Answer)
Electromagnetism
Current Electricity
MCQ (Single Correct Answer)
Moving Charges and Magnetism
MCQ (Single Correct Answer)
Magnetism and Matter
MCQ (Single Correct Answer)
Electromagnetic Induction
MCQ (Single Correct Answer)
Alternating Current
MCQ (Single Correct Answer)
Electromagnetic Waves
MCQ (Single Correct Answer)
Modern Physics
Dual Nature of Radiation
MCQ (Single Correct Answer)
Semiconductor Devices and Logic Gates
MCQ (Single Correct Answer)
Communication Systems
MCQ (Single Correct Answer)
1
KCET 2019
MCQ (Single Correct Answer)
+1
-0

Two particles which are initially at rest move towards each other under the action of their mutual attraction. If their speeds are $$v$$ and $$2 v$$ at any instant, then the speed of centre of mass of the system is

A
$$2v$$
B
zero
C
$$1.5v$$
D
$$v$$
2
KCET 2017
MCQ (Single Correct Answer)
+1
-0
Two balls are thrown simultaneously in air. The acceleration of the centre of mass of the two balls when in air
A
is equal to $g$ (acceleration due to gravity)
B
depends on the speeds of the two balls
C
depends on the masses of the two balls
D
depends on the direction of motion of the two balls.
Questions Asked from MCQ (Single Correct Answer)
KCET Subjects