A water heater of power 2000,W is used to heat water. specific heat capacity of water is 4200,J,kg ^

English

Gujarati

Hindi

10-1.Thermometry, Thermal Expansion and Calorimetry

medium

A water heater of power $2000\,W$ is used to heat water. The specific heat capacity of water is $4200\,J\,kg ^{-1}\, K ^{-1}$. The efficiency of heater is $70 \%$. Time required to heat $2\,kg$ of water from $10^{\circ}\,C$ to $60^{\circ}\,C$ is $..........s$. (Assume that the specific heat capacity of water remains constant over the temperature range of the water).

A

$301$

B

$302$

C

$300$

D

$303$

(JEE MAIN-2023)

Solution

Solution is Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

Standard 11

Physics

Share

Similar Questions

We have half a bucket ($6$ litre) of water at $20^oC $.If we want water at $40^oC$, how much steam at $100^oC$ should be added to it ?

medium

A heater supplying constant power $P$ watts is switched $ON$ at time $t=0 \,min$ to raise the temperature of a liquid kept in a calorimeter of negligible heat capacity. A student records the temperature of the liquid $T(t)$ at equal time intervals. A graph is plotted with $T(t)$ on the $Y$-axis versus $t$ on the $X$-axis. Assume that there is no heat loss to the surroundings during heating. Then,

normal

(KVPY-2019)

Calculate the amount of heat (in calories) required to convert $5\,\, gm$ of ice at $0\,^oC$ to steam at $100\,^oC$

medium

Boiling water is changing into steam. Under this condition, the specific heat of water is

easy

A tap supplies water at $10\,^oC$ and another tap at $100\,^oC$. ………. $kg$ hot water must be taken so that we get $20\, kg$ water at $35\,^oC$ ?

medium