Multiple choice

Which of the following is an example of contact force?

  1. Like poles of magnets repelling each other

  2. Straw rubbed with paper attracting another straw, which is not rubbed with paper

  3. Pressing a lump of dough to make chapatti balls

  4. Water flowing down from a tap

  5. Electromagnets being used to pick up metallic scrap
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Pressing a lump of dough to make chapatti balls is due to muscular force (contact force).

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