Physics
If lift is going up with acceleration, the apparent weight of a body is

May be more or less than true weight
More than the true weight
Equal to the true weight
Less than the true weight

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Physics
Inside an aeroplane, flying at a high altitude,

normal humidity and partial vacuum are maintained.
normal atmospheric pressure is maintained by the use of air pumps.
the pressure is the same as that outside.
the pressure inside is less than the pressure outside.

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