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NEET 2026
Exam
NEET
Year
2026
Subject
Physics
Chapter
Chapter

NEET 2026 · Physics · Chapter

An engine develops a constant power of 40 kW . The total work done...

An engine develops a constant power of 40 kW40\text{ kW}. The total work done by the engine in 5 minutes5\text{ minutes} is

Options

  1. A1.2×107 J1.2 \times 10^7\text{ J}
  2. B2.0×105 J2.0 \times 10^5\text{ J}
  3. C1.2×104 J1.2 \times 10^4\text{ J}
  4. D2.0×102 J2.0 \times 10^2\text{ J}

Correct answer

A. 1.2×107 J1.2 \times 10^7\text{ J}

Step-by-step solution

Given power P=40 kW=40×103 WP = 40\text{ kW} = 40 \times 10^3\text{ W}

Time t=5 minutes=5×60 s=300 st = 5\text{ minutes} = 5 \times 60\text{ s} = 300\text{ s}

Work done W=P×tW = P \times t

W=40×103×300W = 40 \times 10^3 \times 300

W=12×106 J=1.2×107 JW = 12 \times 10^6\text{ J} = 1.2 \times 10^7\text{ J}

Answer: 1.2×107 J1.2 \times 10^7\text{ J}
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