A) Friction due to fluid is called
B) on what principal does a ball bearing
work
C) what kind of force is friction
D) differentiate between converging and diverging
E) differentiate between regular and diffused reflection
Answers
a) viscosity
b) Ball bearing works on the principle of rolling friction. Ball bearing contains steel balls or rollers. It is used between the wheels and axle of a car to reduce friction.
c) opposing force
d)If the light rays converge (as in a converging lens), then they will converge to a point. This point is known as the focal point of the converging lens. If the light rays diverge (as in a diverging lens), then the diverging rays can be traced backwards until they intersect at a point.
e)The difference between regular and diffuse reflection. Reflection is what allows us to see things. Light, from a souce such as a light globe or the Sun, strikes the objects and is reflected back to our eyes. ... Reflection from a polished surface is called regular reflection.
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