MCQ
3821.
When a body falls freely under gravitational force, it possesses---- weight.
no
maximum
minimum
3822.
The unit of energy in SI unit is-
dyne
kg.m
joule
watt
3823.
The force, by which the body is attracted towards the center of the earth, is called-
impulsive force
momentum
weight
mass
3824.
One joule is equal to-
0.1 N-m
1 N-m
100 N-m
10 N-m
3825.
If the gravitational acceleration of any place is doubled, then the weight of a body will be-
g/2
g
2g
√2g
3826.
The range of a projectile is maximum, when the angle of projection is-
30°
60°
45°
90°
3827.
When the spring of a watch is wound, it will possess-
a strain energy
heat energy
kinetic energy
electrical energy
3828.
The coefficient of restitution for inelastic bodies is-
zero
between 0 & 1
one
more than one
3829.
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
3830.
One watt is equal to-
0.1 joule/s
100 joules/s
1 joule/s
10 joules/s
3831.
The rate of doing work is known as-
potential energy
power
kinetic energy
none of these
3832.
The potential energy of a vertically raised body is -----the kinetic energy of a vertically falling body.
equal to
greater than
less than
3833.
The total motion possessed by a body, is called
impulsive force
momentum
weight
mass
3834.
The unit of angular velocity is-
m/min
revolution/min
rad/s
all of these
3835.
The force applied on a body of mass 100kg to produce an acceleration of 5m/s², is-
20N
500N
100N
none of these
3836.
The velocity of a particle moving with simple harmonic motion is....at the mean position-
zero
equal
minimum
maximum
3837.
Joule is the unit of-
force
energy
work
power
3838.
The unit of work in SI unit is-
newton
joule
erg
kg.m
3839.
In order to double the period of simple pendulum, the length of the string should be-
halved
quadrupled
doubled
tripled
3840.
The matter contained in a body, is called-
impulsive force
momentum
weight
mass