Q. What is the process by which objects gain heat energy?
वह कौन सी प्रक्रिया है जिसके द्वारा वस्तुएँ ऊष्मा ऊर्जा प्राप्त करती हैं?
Explanation
Objects can gain heat energy through:
Conduction – by direct contact (e.g., metal rod heated at one end).
Convection – by movement of fluids (liquids or gases).
Radiation – by electromagnetic waves (e.g., sunlight).
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