gneet Physics Solved MCQ
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TOPIC :LAWS OF MOTION
Number of questions are 429, Select_Question:
Q1) When two surfaces are coated with a lubricant, then they [AFMC 1998]
a) roll upon each other
b) slide upon each other
c)stick to each other
d)none of these
Due to lubricant, friction force will not act. And surface will slide