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Radius of a soap bubble is increased from R to 2R. Work done in this process in terms of surface tension S is
Options
(a) 24 πR²S
(b) 48 πR²S
(c) 12 πR²S
(d) 36 πR²S
Correct Answer:
24 πR²S
Explanation:
Work done = 2 x S x Change in surface area
W = 2 x S x 4π (R₂² – R₁²)
Given: R₂ = 2R, R₁ = R = 8S π (4R² – R²) = 24 πR²S.
Related Questions: - Out of the following which pair of quantities does not have same dimensions?
- A certain number of spherical dropes of a liquid of radius r coalesce to form a single
- Two wires of the same dimensions but resistivities p1 and p2 are connected in series
- A thin semicircular conducting ring (PQR) of radius r is falling with its plane
- Maximum kinetic energy of electrons emitted in photoelectric effect increases when
Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Out of the following which pair of quantities does not have same dimensions?
- A certain number of spherical dropes of a liquid of radius r coalesce to form a single
- Two wires of the same dimensions but resistivities p1 and p2 are connected in series
- A thin semicircular conducting ring (PQR) of radius r is falling with its plane
- Maximum kinetic energy of electrons emitted in photoelectric effect increases when
Topics: Properties of Bulk Matter (130)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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