3. It is due to atmospheric pressure that ink gets filled into a fountain pen.Give reason
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Explanation:
As higher altitudes, the pressure decreases.
The pressure at higher altitudes is comparatively less, so to equalize the pressure difference ink starts moving out from the pen which has a relatively high pressure
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1
Answer:
the pressure of the ink inside the tube of a fountain pen is atmospheric pressure which is high while the outside pressure is low. Due to pressure difference at high altitude, the air column exerts a pressure on the ink of the fountain pen. As a result, the ink in the tube is forced to move upwards.
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