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Physics
Assertion: The size of a hydrogen balloon increases as it rises in air. Reason: The material of the balloon can be easily stretched.
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Q.
Assertion :
The size of a hydrogen balloon increases as it rises in air.
Reason :
The material of the balloon can be easily stretched.
AIIMS
AIIMS 2003
Kinetic Theory
A
if both assertion and reason are true and the reason is the correct explanation of the assertion
B
if both assertion and reason are true and the reason is not the correct explanation of the assertion
C
if assertion is true but reason is false
D
if both assertion and reason are false statements
Solution:
As balloon rises, atmosphere's pressure decreases but pressure inside balloon remains same so balloon's inner pressure become more and balloon's size increases due to pressure difference.