📊 Physics
Q. The force of friction between two surfaces will increase if:
  • (A) A layer of lubricant is kept between the two surfaces
  • (B) The two surfaces are pressed harder
  • (C) Air gap is created between the two surfaces
  • (D) Irregularities on both the surfaces are removed
✅ Correct Answer: (B) The two surfaces are pressed harder

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Mahesh Chandra
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