In a circuit consisting of two lamps connected in parallel, if there is 6 v across one lamp, what is the voltage across the other lamp? !

If the two lamps are connected in parallel, then there is nothing
but wire between both of their top terminals, and nothing but wire
between their bottom terminals.

The result is that their bottom terminals are connected together,
their top terminals are connected together, the voltages at
corresponding points of both lamps are exactly the same, and
the total voltages ACROSS both lamps are equal.

Gas

Explanation:

Gases are compressible because most of the volume of a gas is composed of the large amounts of empty space between the gas particles.