Find the odd one out based on the working principle of a Wedge:

Find the odd one out based on the working principle of a Wedge:
  1. Knife blade
  2. Front teeth (incisors)
  3. Zipper teeth
  4. Thread of a bolt

Solution

Knife blade, incisors, and zipper teeth all use a wedge shape to cut, tear, or separate objects. The thread of a bolt works on the principle of a screw.

Asked in: Homi Bhabha Practice

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