MCQ
1. The force applied on a body of mass 100kg to produce an acceleration of 5m/s², is-
20N
500N
100N
none of these
2. The linear velocity of a body rotating at o rad/s along a circular path of radius r is given by-
ω.г
ω/г
ω^2/г
ω^2 г
3. The periodic time "T" is given by-
2π/ω
ω/2π
2πω
ω/π
4. When the spring of a watch is wound, it will possess-
a strain energy
heat energy
kinetic energy
electrical energy
5. The slope on the road surface generally provided on the curve is known as-
angle of friction
angle of banking
angle of repose
none of these
6. The angular velocity (in rad/s) of a body rotating at N revolutions per minute is-
πn/60
πn/180
2πn/60
2πn/180
7. The maximum acceleration of a particle moving with simple harmonic motion is-
ω
ω.г
ω^2 г
ω/г
8. The velocity of a particle moving with simple harmonic motion is....at the mean position-
zero
equal
minimum
maximum
9. The range of a projectile is maximum, when the angle of projection is-
30°
60°
45°
90°
10. The amplitude is always ----radius of the circle.
equal to
greater than
less than
11. One joule is equal to-
0.1 N-m
1 N-m
100 N-m
10 N-m
12. The potential energy of a vertically raised body is -----the kinetic energy of a vertically falling body.
equal to
greater than
less than
13. Joule is the unit of-
force
energy
work
power
14. The unit of work in SI unit is-
newton
joule
erg
kg.m
15. One watt is equal to-
0.1 joule/s
100 joules/s
1 joule/s
10 joules/s
16. The unit of angular velocity is-
m/min
revolution/min
rad/s
all of these
17. The unit of energy in SI unit is-
dyne
kg.m
joule
watt
18. The rate of doing work is known as-
potential energy
power
kinetic energy
none of these
19. The maximum velocity of a particle moving with simple harmonic motion is-
ω
ω^2 г
.ω/г
ωг
20. In order to double the period of simple pendulum, the length of the string should be-
halved
quadrupled
doubled
tripled