Q23.Small water droplets of radius 0.01 mm are formed in the upper atmosphere and falling with a terminal velocity of 10 cm/s. Due to condensation, if 8 such droplets are coalesced and formed a larger drop, the new terminal velocity will be _____ cm/s.
What This Question Tests
The question tests the relationship between terminal velocity and droplet radius, and how the radius changes when multiple droplets coalesce while conserving total volume.
Concepts Tested
Formulas Used
v_t = (2r²(ρ - σ)g) / (9η)
V_new = n * V_old
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📋 Question Details
- Chapter
- Properties of Matter
- Topic
- Viscosity and Terminal Velocity
- Year
- 2024
- Shift
- 08 Apr Shift 2
- Q Number
- Q23
- Type
- Numerical
- NCERT Ref
- Class 11 Physics Ch 10: Mechanical Properties of Fluids
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