One mole of an ideal gas requires $207\, J$ heat to raise the temperature by $10 \,K$ when heated at constant pressure. If the same gas is heated at constant volume to raise the temperature by the same $10\, K,$ the heat required is ...... $J$
(Given the gas constant $R = 8.3J/mol{\rm{ - }}K$)
AIPMT 1990, Medium
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