MCQ
When we rub our palms they gets heated but to a maximum temperature because
- AHeat is absorbed by our palm
- ✓Heat is lost in the environment
- CProduced of heat is stopped
- DNone of the above
✓
Answer
Correct option: B.
Heat is lost in the environment
(b) Work done changes into heat energy, when the temperature of palm becomes above the atmosphere so it starts losing heat to the surroundings.
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
The volume of air increases by $5 \%$ in its adiabatic expansion. The percentage decrease in its pressure will be
→Two lenses have focal lengths $f_1$ and $f_2$ and their dispersive powers are $\omega_1$ and $\omega_2$ respectively. They will together form an achromatic combination if
→A given ray of light suffers minimum deviation in an equilateral prism $P$. Additional prisms $Q$ and $R$ of identical shape and material are now added to $P$ as shown in the figure. The ray will suffer
→The equation of a sound wave is $y=0.0015 \sin (62.4 x+316 t)$ The wavelength of this wave is
→Work done in raising a box depends on
When a tuning fork vibrates, the waves produced in the fork are
A $50 \mathrm{mH}$ coil carries a current of $2$ ampere. The energy stored in joules is
→Which of the following is incorrect statement regarding photon
The beats are produced by two sound sources of same amplitude and of nearly equal frequencies. The maximum intensity of beats will be that of one source
A moving body of mass $\mathrm{m}$ and velocity $3 \mathrm{~km} / \mathrm{h}$ collides with a rest body of mass $2 \mathrm{~m}$ and sticks to it. Now the combined mass starts to move. What will be the combined velocity
→