Per NCERT, on what does the magnitude of the FRICTION force depend?
AThe nature of the surfaces in contact
BOnly the temperature
COnly the time of day
DOnly the colour of the object
Answer & Solution
Correct answer: A. The nature of the surfaces in contact
Per NCERT §6.3 Activity 6.1, friction depends on the nature of surfaces in contact. Rough surfaces give more friction than smooth surfaces.
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