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Q. What is microwave oven? How it works?
Microwave oven It is utilized to cook the food in a short time. When the oven is manage the microwaves are generated which in turn produce a non-uniform oscillating electric field. The water molecules in the food that are the electric dipoles are excited by an oscillating torque. Therefore few bonds in the water molecules are broken and heat energy is produced. This is utilized to cook food.
With the help of neat & labelled diagram. Explain the principle & working of a moving coil galvanometer. What is importance of radial magnetic field.
is average speed the magnitude of average velocity?justify your answer with a suitable example?
State two conditions to obtain sustained interference of light In Young's double slit experiment, using light of wavelength 400 nm, in terference fringes of width 'X' are obtain
He customized Newton's formula suppose that propagation of sound in gaseous medium is adiabatic process. For adiabatic method
What do you mean by an optical fiber? State its principle. Can we minimize chromatic and spherical aberrations simultaneously? If so, how?
Double-slit experiment (T. Young; 1801): A popular experiment which illustrates the wave nature of light (and indeed of other particles). Light is passed out from a small sour
A 6kg crate originally at rest is pulled to the right along a horizontal plane with a constant horizontal force of 12N. a)find the velocity of the crate once it has moved 3m on th
Who shared the Nobel Prize in Physics in 1909 with Guglielmo Marconi for his contribution to the development of wireless telegraphy? Ans: (Carl Ferdinand) Braun shared the N
Bernoulli's equation In an irrotational fluid, total of the static pressure, the weight of the fluid per unit mass times the height, & half the density times the velocity squa
what is it?
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