jee-main 2025 Q12

jee-main · India · session2_07apr_shift2 Not Maths

Q12. Water boils in an electric kettle in 20 minutes after being switched on. Using the same main supply, the length of the heating element should be $\_\_\_\_$ to $\_\_\_\_$ times of its initial length if the water is to be boiled in 15 minutes.
(1) decreased, $3 / 4$
(2) increased, $4 / 3$
(3) decreased, 4/3
(4) increased, $3 / 4$

Q12. Water boils in an electric kettle in 20 minutes after being switched on. Using the same main supply, the length of the heating element should be $\_\_\_\_$ to $\_\_\_\_$ times of its initial length if the water is to be boiled in 15 minutes.\\
(1) decreased, $3 / 4$\\
(2) increased, $4 / 3$\\
(3) decreased, 4/3\\
(4) increased, $3 / 4$

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