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
List all the forces acting on:
- The pulley A.
- The boy and.
- The block C in figure.
Light of frequency $9.21 \times 10^{14} Hz$ is incident on a metal surface. Electrons with a maximum speed $6.0 \times 10^5 ms^{-1}$ are ejected from the surface. What is the threshold frequency for photoemission of electrons?
\[\left(h=6.625 \times 10^{-34} Js\right)\]
→\[\left(h=6.625 \times 10^{-34} Js\right)\]
In the metre bridge experiment, balance point was observed at J with AJ = l.
- The values of R and X were doubled and then interchanged. What would be the new position of balance point?
- If the galvanometer and battery are interchanged at the balance position, how will the balance point get affected?
Explain the difference between non-polar and polar atoms or molecules by giving examples.
Explain resonance for $L-C-R$ series $A C$ circuit. Obtain the equation of resonance frequency and explain resonance curve.
→How are electro magnetic waves produced ?
Explain.
Explain.
Suppose you are told that the linear size of everything in the universe has been doubled overnight. Can you test this statement by measuring sizes with a metre stick? Can you test it by using the fact that the speed of light is a universal constant and has not changed? What will happen if all the clocks in the universe also start running at half the speed?
Show that the interior of a conductor can have no excess charge in the static situation.
- Explain the meaning of the statement ‘electric charge of a body is quantised’.
- Why can one ignore quantisation of electric charge when dealing with macroscopic i.e., large scale charges?
Explain the photoelectric effect when the radiation is incident on different metals?