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NTSE physics question Which of the following force is responsible for taking a gas ballon upwards ? (a) Gravitational force (b) Muscular force (c) Bouyant

force (d) Magnetic force Please explain! Thanks


Gas balloon contains helium which has very low density than air. So buoyant force acts on the balloon which takes is upward.
Answer is C.
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Bouyant force ............................................
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