The coil wire in the electric room heater or electric cooking heater is called ............
circuit
element
filament
cells
B.
element
The incident ray, the _________ at the point of incidence and the reflected ray all lie in the same plane.
surface
tangent
normal
angle of reflection
During uniform motion of an object along a straight line, the ________ remains constant with time.
time
velocity
acceleration
distance
According to the Second Law of Motion, for a given force, acceleration is inversely proportional to the _________ of an object.
density
volume
force
mass
An image formed by a plane mirror, that cannot be obtained on a screen is called _______.
Virtual Image
Real Image
Inverted Image
Erect Image
Contact force is another name for .............
Friction
Magnetic force
Electrostatic force
Muscular force
The force exerted by a magnet is an example of ...............
Non-contact force
Muscular force
Contact force
Electrostatic force
The passage of an electric current through a conducting liquid causes ............
Galvanisation
Evaporation
Physical Reaction
Chemical Reaction
The force of friction between two surfaces will increase if:
a layer of lubricant is kept between the two surfaces
the two surfaces are pressed harder
air gap is created between the two surfaces
irregularities on both the surfaces are removed