4200 / of work is required for - Vidyadip

MCQ

$4200 /$ of work is required for

A
Increasing the temperature of $10 \mathrm{gm}$ of water through $10^{\circ} \mathrm{C}$
✓
Increasing the temperature of $100 \mathrm{gm}$ of water through $10^{\circ} \mathrm{C}$
C
Increasing the temperature of $1 \mathrm{~kg}$ of water through $10^{\circ} \mathrm{C}$
D
Increasing the temperature of $10 \mathrm{~kg}$ of water through $10^{\circ} \mathrm{C}$

✓

Answer

Correct option: B.

Increasing the temperature of $100 \mathrm{gm}$ of water through $10^{\circ} \mathrm{C}$

(b) Work done to raise the temperature of $100 \mathrm{gm}$ water through $10^{\circ} \mathrm{C}$ is$W=J Q=4.2 \times\left(100 \times 10^{-3} \times 1000 \times 10\right)=4200 \mathrm{~J}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "MCQ" from Thermometry, Thermal Expansion and Calorimetry→Thermometry, Thermal Expansion and Calorimetry — all question types→JEE physics STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

A Carnot's engine used first an ideal monoatomic gas then an ideal diatomic gas. If the source and sink temperature are $411^{\circ} \mathrm{C}$ and $69^{\circ} \mathrm{C}$ respectively and the engine extracts $1000 \mathrm{~J}$ of heat in each cycle, then area enclosed by the PV diagram is

In the circuit given, the correct relation to a balanced Wheatstone bridge is

A metal wire of specific resistance $64 \times 10^{-6} \mathrm{ohm}-\mathrm{cm}$ and length $198 \mathrm{~cm}$ has a resistance of $7 \mathrm{ohm}$, the radius of the wire will be

Which of the accompanying $P V$, diagrams best represents an isothermal process

The object distance $u$, the image distance $v$ and the magnification $m$ in a lens follow certain linear relations. These are

In the following arrangement $y=1.0 \mathrm{~mm}, d=0.24 \mathrm{~mm}$ and $D=1.2 \mathrm{~m}$. The work function of the material of the emitter is $2.2 \mathrm{eV}$. The stopping potential $V$ needed to stop the photo current will be

While using an electric bulb, the reflection for street lighting should be from

How many wavelength of $K r^{86}$ are there in one metre

In a YDSE bi-chromatic light of wavelengths $400 nm$ and $560 nm$ are used. The distance between the slits is $0.1 mm$ and the distance between the plane of the slits and the screen is $1 m$. The minimum distance between two successive regions of complete darkness is

The magnetic flux linked with a coil at any instant ' $t$ ' is given by $\phi=$ $5 t-100 t+300$, the e.m.f. induced in the coil at $t=2$ second is