Question
Explain why cooking is faster in a pressure cooker.
✓
Answer
As in pressure cooker liquid is changed in to vapors and they increase pressure inside cooker as we know pressure is directly proportional to temperature thus temperature increases along with pressure thus food is cooked faster.
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
Arrange the following electromagnetic radiations in ascending order of their frequencies:
- Microwave.
- Radio wave.
- X-rays.
- Gamma rays.
A parallel-plate capacitor is filled with a dielectric material of resistivity ρ and dielectric constant K. The capacitor is charged and disconnected from the charging source. The capacitor is slowly discharged through the dielectric. Show that the time constant of the discharge is independent of all geometrical parameters like the plate area or separation between the plates. Find this time constant.
Answer the following question:
Every metal has a definite work function. Why do all photoelectrons not come out with the same energy if incident radiation is monochromatic? Why is there an energy distribution of photoelectrons?
Every metal has a definite work function. Why do all photoelectrons not come out with the same energy if incident radiation is monochromatic? Why is there an energy distribution of photoelectrons?
The refractive index of a material changes by 0.014 as the colour of the light changes from red to violet. A rectangular slab of height 2.00cm made of this material is placed on a newspaper. When viewed normally in yellow light, the letters appear 1.32cm below the top surface of the slab. Calculate the dispersive power of the material.
A wire, carrying a current i, is kept in the x−y plane along the curve $\text{y}=\text{A}\sin\Big(\frac{2\pi}{\lambda}\text{x}\Big).$ A magnetic field B exists in the z direction. Find the magnitude of the magnetic force on the portion of the wire between $\text{x}=0$ and $\text{x}=\lambda.$
→Consider a 10cm long portion of a straight wire carrying a current of 10A placed in a magnetic field of 0.1T making an angle of 53° with the wire. What magnetic force does the wire experience?
$P$ and $Q$ are two identical charged particles each of mass $4 \times 10^{-26} \ kg$ and charge $4.8 \times 10^{-19} C$, each moving with the same speed of $2.4 \times 10^5 m / s$ as shown in the figure. The two particles are equidistant $(0.5 m)$ from the vertical $Y -$ axis. At some instant, a magnetic field $B$ is switched on so that the two particles undergo head $-$ on collision.
Find $–$
$(I)$ the direction of the magnetic field and
$(II)$ the magnitude of the magnetic field applied in the region.
→Find $–$
$(I)$ the direction of the magnetic field and
$(II)$ the magnitude of the magnetic field applied in the region.
A lamp is connected in series with a capacitor. Predict your observations for dc and ac connections. What happens in each case if the capacitance of the capacitor is reduced?
- Find the first excitation potential of $He^+ \text{ion}.$
- Find the ionization potential of $Li^{++ } \text{ion}.$
Write limitations of Huygen's Principle.