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what is friction? What are the factors affecting for it? Advantages and disadvantages of it
Explain 'drift velocity of free electrons'? Derive Ohm's law on the basis of the theory of electron drift.
A test tube holder An appropriate test tube holder can be made by bending strong spring wire made of iron or brass into the shape shown in the diagram. Wire from a coat hanger
The energy needed to ionize an atom is known as ionization energy. It is the energy needed to make the electron jump from the present orbit to the infinite orbit.
What do you understand by "Absorption coefficient"? which is a better absorber of sound, glass or fibre glass?
A tin can charcoal burner A large tin can at least 10 cm in diameter should be use. About 4 cm from the bottom mark off triangular windows around the can, as shown in the diagr
Q. Does sunlight reflected off a mirror raise the temperature of the sun-rays? Answer:- A standard planar mirror will not raise the energy contained in the rays that refle
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
Two long wires 'P' and 'Q', carrying equivalent currents of 5 Ampere and the distance among the wire is 5 cm. Determine the force applied on each wire if a. Current flowing in
Q. Why nichrome is used as heating element in electric heating devices? Nichrome, an alloy of nickel as well as chromium is used as the heating element for the following reaso
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