MCQ
The dimensions of calorie are
- ✓$M{L^2}{T^{ - 2}}$
- B$ML{T^{ - 2}}$
- C$M{L^2}{T^{ - 1}}$
- D$M{L^2}{T^{ - 3}}$
✓
Answer
Correct option: A.
$M{L^2}{T^{ - 2}}$
a
(a) Calorie is the unit of heat i.e., energy.
(a) Calorie is the unit of heat i.e., energy.
So dimensions of energy $ = M{L^2}{T^{ - 2}}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A Carnot's heat engine works between the temperatures $427^{\circ} C$ and $27^{\circ} C$. $...........\,kcal / s$ amount of heat should it consume per second to deliver mechanical work at the rate of $1.0\,kW$
→When heat in given to a gas in an isobaric process, then
Graphs below show the entropy versus energy $U$ of two systems $1$ and $2$ at constant volume. The initial energies of the systems are indicated by $U_{1, i}$ and $U_{2, i}$, respectively. Graphs are drawn to the same scale. The systems are then brought into thermal contact with each other. Assume that, at all times the combined energy of the two systems remains constant. Choose the most appropriate option indicating the energies of the two systems and the total entropy after they achieve the equilibrium.
→The figure shows the velocity and the acceleration of a point like body at the initial moment of its motion. The direction and the absolute value of the acceleration remain constant. Find the time when the speed becomes minimum.........$s$ (Given : $a = 4\, m/s^2, v_0 = 40\, m/s, \phi =143^o$)
→The thermodynamic process, in which internal energy of the system remains constant is ...........
A length $5.997 m$ rounded off to three significant figures is written as .......... $m$
→The thermal capacity of a body is $80\, cal$, then its water equivalent is
→Two projectiles are thrown simultaneously in the same plane from the same point. If their velocities are $v_1$ and $v_2$ at angles $\theta _1$ and $\theta_2$ respectively from the horizontal, then answer the following question
→If $v_1\,\,sin\,\,\theta _1 = v_2\,\,sin\,\,\theta _2$, then choose the incorrect statement
A disc of mass $1 \,kg$ and radius $0.1 \,m$ is rotating with angular velocity $20 \,rad / s$. What is angular velocity (in $rad/s$) if a mass of $0.5 \,kg$ is put on the circumference of the disc?
→Which of the following is a scalar quantity