Question

12. Which one of the following force is a contact force?
निम्नलिखित बलो में से कौन सा एक सम्पर्क बल है?
a) Force of gravity (गुरुत्व बल) b) Force of friction (घर्षण बल)
c) Electrostatic force (विद्युत बल) d) Magnetic force (चुंबकीय बल)​

Answer 1

Explanation:

b) force of friction is the correct answer

Answer 2

Answer:

(a)force of friction

Explanation:

friction has produced in two surface.