Question
A thermoelectric refrigerator works on(a) Joule effect(b) Seeback effect(c) Peltier effect(d) Thermonic emission
✓
Answer
(c) Peltier effect
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 mass of the electron varies with(a) The size of the cathode ray tube(b) The variation of ‘g’(c) Velocity(d) Size of the electron
Two wires of the same material and equal length are joined in parallel combination. If one of them has half the thickness of the other and the thinner wire has a resistance of 8 ohms, the resistance of the combination is equal to
Using a bar magnet P, a vibration magnetometer has time period 2seconds. When a bar Q (identical to P in mass and size) is placed on top of P, the time period is unchanged. Which of the following statements is true(a) Q is of non-magnetic material(b) Q is a bar magnet identical to P, and its north pole placed on top of P's north pole(c) Q is of unmagnetized ferromagnetic material(d) Nothing can be said about Q's properties
In the following Wheatstone bridge $P/Q = R/S.$ If key $K$ is closed, then the galvanometer will show deflection
→A student has $10$ resistors of resistance $' r\ '.$ The minimum resistance made by him from given resistors is
→Which of the following change the activity of radioisotope?
For measuring voltage of any circuit, potentiometer is preferred to voltmeter because:
For a photoelectric cell the graph showing the variation of cut of voltage $(V_o)$ with frequency $(n)$ of incident light is best represented by
→What is shape of magnet in moving coil galvanometer to make the radial magnetic field(a) Concave(b) Horse shoe magnet(c) Convex(d) None of these
When a straight wire is moved up and down rapidly between two poles of a horseshoe magnet then _______ is produced in the wire.