Q. A person climbing stairs is doing

एक व्यक्ति सीढ़ियाँ चढ़ रहा है

A
No work
कोई काम नहीं
B
Positive work
सकारात्मक कार्य
C
Negative work
नकारात्मक कार्य
D
Zero energy work
शून्य ऊर्जा कार्य

Explanation

The person applies force and moves upwards against gravity, so work is done on the person’s body and the stairs. This work is positive because force and displacement are in the same direction (upward).

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