Sample questions
You've seen the pattern — here are a few of the actual PYQs.
CDS2018
If two miscible liquids of same volume but different densities P1 and P2 are mixed, then the density of the mixture is given by
- A (P1 + P2)/2 ✓
- B 2P1P2/(P1 + P2)
- C 2P1P2/(P1 - P2)
- D P1P2/(P1 + P2)
✓ Correct answer: (A)
Science & Technology › Physics & Chemistry
CDS2018
Two persons are holding a rope of negligible mass horizontally. A 20 kg mass is attached to the rope at the midpoint; as a result the rope deviates from the horizontal direction. The tension required to completely straighten the rope is (g = 10 m/s^2)
- A 200 N
- B 20 N
- C 10 N
- D infinitely large ✓
✓ Correct answer: (D)
Science & Technology › Physics & Chemistry
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