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Question 6432
NEET Physics · Hard

Mechanical Properties of Fluids: Buoyancy MCQ

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BuoyancyHardQuestion 6432

Question

A balloon of volume 1 m³ is filled with gas (ρ_gas=0.1 kg/m³). Balloon mass = 0.2 kg. Net upward force in air (ρ_air=1.2 kg/m³, g=10):
  1. A
    8 N
  2. B
    9 N
    Correct
  3. C
    7 N
  4. D
    10 N

Correct answer

9 N

Explanation

Buoyant force = 1.2×1×10 = 12 N. Weight = (0.2+0.1)×10 = 3 N. Net upward = 12−3 = 9 N.

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