111
Which of the following is not an example of a simple machine?
A.
B.
C.
D.
Answer & Solution
Answer:
WheelA simple machine is a mechanical device that changes the
state of condition or force with least external (human) effort. So, only Wheel
among the above options can hardly propel itself without axle.
112
What is the unit of magnetic field?
A.
B.
C.
D.
Answer & Solution
Answer:
Tesla113
Which of the following is a vector quantity?
A.
B.
C.
D.
Answer & Solution
Answer:
VelocityVelocity is a vector quantity because it has both magnitude and direction, unlike scalar quantities like mass, speed, and distance.
114
Which of the following substances is NOT a conductor?
A.
B.
C.
D.
Answer & Solution
Answer:
All are conductorsConductor is an object through which electricity can pass in
one or more direction. Aluminum, Silicon, Graphite, Copper, Gold etc. are the
widely used examples of conductors.
115
What is the unit of electric charge?
A.
B.
C.
D.
Answer & Solution
Answer:
CoulombThe SI unit of electric charge is known as Columb, which is
named after Charles Augustin de Columb-a renowned French physicist.
