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Question 3Asked in RRB JE CBT-1, 20 Feb 2026, Shift 2 (12:45 PM)

A room heater and an electric bulb both convert electrical energy to heat, but why does

A room heater and an electric bulb both convert electrical energy to heat, but why does only the bulb emit significant visible light?
  1. AThe bulb's filament reaches a higher temperature, emitting visible light
  2. BThe heater uses magnetic effect instead of heating effect
  3. CThe heater is made of a different material
  4. DThe circuit design is different
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Correct answer: (A) The bulb's filament reaches a higher temperature, emitting visible light

From RRB JE CBT-1 PYQ 20 Feb 2026, Shift 2 (12:45 PM)

This is question 3 of RRB JE CBT-1 PYQ 20 Feb 2026, Shift 2 (12:45 PM). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.