Question

i.
महानगरेषु वाहनानाम् अनन्ताः पङ्क्तयः धावन्ति।
(क) कदा (ख) किं (ग) केषु (घ) कः​

Answer 1

Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction: Dry friction is a force that opposes the relative lateral motion of two solid surfaces in contact.