Solved UPSC CDS/OTA Question
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Q · Work, Energy and PowerMedium · 45s
Which of the following is correct about work done by a force? 1. Work is a scalar quantity. 2. Work done can be positive, negative, or zero. 3. Work is maximum when force and displacement are perpendicular. Select the correct answer:
TopicWork, Energy and Power
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Q 1 / 30Next question →
Step-by-Step Solution
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Work is scalar. It can be positive (force along displacement), negative (force opposite to displacement), or zero (force perpendicular to displacement). When force is perpendicular to displacement, work done is zero.
Final Answer: Option A — 1 and 2 only