The weight of a balloon is W_1 when empty and W_2 when filled with air. Both are weighed in air by the same sensitive spring balance and under identical conditions.

The weight of a balloon is W_1 when empty and W_2 when filled with air

1.	The weight of a balloon is W_1 when empty and W_2 when filled with air. Both are weighed in air by the same sensitive spring balance and under identical conditions.
Answer» `W_1 = W_2`, as the weight of air in the balloon is offset by the force of BUOYANCY on it. `W_2 LT W_1` due to the force of buoyancy ACTING on the filled balloon. `W_2 gt W_1`, as the air inside is at a greater PRESSURE and hence has greater DENSITY than the air outside. `W_2 = W_1 +` weight if the air inside it. Answer :C