MCQ
Unit of energy is
- A$J/\sec $
- ✓$Watt - day$
- C$Kilowatt$
- D$gm{\rm{ - }}cm/{\sec ^2}$
✓
Answer
Correct option: B.
$Watt - day$
b
(b)
(b)
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 particle is performing simple harmonic motion with amplitude A and angular velocity ${\omega }$. The ratio of maximum velocity to maximum acceleration is
→The velocity of water waves $v$ may depend upon their wavelength $\lambda $, the density of water $\rho $ and the acceleration due to gravity $g$. The method of dimensions gives the relation between these quantities as
→The moment of inertia of a meter scale of mass $0.6\, kg$ about an axis perpendicular to the scale and located at the $20\, cm$ position on the scale in $kg \,m^2$ is (Breadth of the scale is negligible
→A satellite is revolving around earth in a circular orbit at a uniform speed $v$. If gravitational force suddenly disappears, speed of the satellite will be ..............
→A body of mass $m$ moves in a circular path with uniform angular velocity. The motion of the body has constant
→A body of mass m is attached to a spring and oscillates. If the force constant of the spring is K, then the period of oscillation of the body will be:
The fundamental frequency is n of both open end of argon pipe. Keep in vertical and dip in water half length of tubes. So it will full with half water the fundamental frequency of air column.
The potential energy $U$ between two molecules as a function of the distance $X$ between them has been shown in the figure. The two molecules are
→If the r.m.s. speed of chlorine molecule is $490\,m / s$ at $27^{\circ}\,C$, the r.m.s. speed of argon molecules at the same temperature will be $......\,m/s$ (Atomic mass of argon $=39.9\,u$, molecular mass of chlorine $=70.9\,u )$
→One Mach number is equal to