Which of the following option is
CORRECT about the methods used to reduce the friction?
घर्षण को कम करने के लिए उपयोग की जाने वाली विधियों के बारे में निम्नलिखित में से कौन सा विकल्प सही है?
Making a rough surface
Use of lubricants
Use of sand particles
None of these
Use of lubricants
●Roughest the surface, higher the
value of coefficient of friction and hence higher the friction force.
●Lubricants are applied to reduce
friction on rough surfaces.
Hence, the correct option is (B).
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