UPSC Prelims 2003·GS1·geography·general geography

An oil tanker is partially filled with oil and moves forward on a level road with uniform acceleration. The free surface of oil then

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Last updated 23 May 2026, 3:31 pm IST
  1. ARemains horizontal
  2. BIs inclined to the horizontal with smaller depth at the rear end
  3. CIs inclined to the horizontal with larger depth at the rear endCorrect
  4. DAssumes parabolic curve

Explanation

When an oil tanker accelerates forward, the liquid inside experiences a pseudo force acting in the opposite direction of the motion. This force pushes the oil toward the back of the tank. As a result, the oil accumulates at the back, causing the liquid level to rise at the rear end and dip at the front end. This creates an inclined free surface where the depth of the oil is greater at the rear end than at the front. This inclination stays constant as long as the acceleration is uniform. Therefore, option C is correct.
geography: An oil tanker is partially filled with oil and moves forward on a level road with uniform acceleration. The free surface
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