1
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

Two masses of 1g and 9g are moving with equal kinetic energy. The ratio of magnitude of their momentum is

A
3 : 1
B
1 : 3
C
1 : 2
D
2 : 1
2
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

For motion under central forces, which quantity will be conserved?

A
Kinetic energy
B
Mechanical energy
C
Potential energy
D
None of the above
3
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

A particle of mass m is moving in a horizontal circle of radius R under a centripetal force equal to $$-\frac{A}{R^2}$$ (A = constant). The total energy of the particle is

A
$$\frac{A}{R}$$
B
$$-\frac{A}{R}$$
C
$$\frac{A}{2R}$$
D
$$-\frac{A}{2R}$$
4
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

A force of 20 N is applied on a body of mass 5 kg resting on a horizontal plane. The body gains a kinetic energy of 10 J after it moves a distance 2 m. The frictional force is

A
10 N
B
15 N
C
20 N
D
30 N
COMEDK Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
CBSE
Class 12