Multiple choice

Which of the following statements is incorrect?

  1. Friction is a necessary evil.

  2. Friction cannot be reduced.

  3. Static friction comes into play when we try to move an object at rest.

  4. Rolling friction is always less than sliding friction.

  5. Friction is caused due to interlocking of irregularities on the two surfaces in contact with each other.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Friction can be reduced by using lubricants, soap solution or by polishing, etc.

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