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What angle we take between magnetic field and plane of loop....discuss the cases when induced emf is zero in a rotating frame.Ans) We know that Magnetic Flux through a given area is given as ?=B.A= BAcosθLet θ=wt, where w is frequency of sourceNow, the Induced emf will be zero if:1. Magnetic field B is zero,2. Area of the conductor is zero.3. Angle between Magnetic field and Area Vector is 90oAlso the angle between the Magnetic field and plane of loop is taken as anticlockwise angle or positive angle
Method of Making magnet: There are two types of making magnets. Single Touch Method: a. In this method a bar magnet is rubbed on a hard steel bar. b. The magnet is k
a. Which materials are conducting to which other materials? Water conducting can Can conduct bubble wrap Can to cotton wrap b. Which layers are insulating?
advantages and disadvantages
A radioactive substance has a half life of 1 min. If one nuclei decays now , when will be next decay????
what is atom
The scattering of a photon by an electron is known as Compton Effect. The momentum and energy is preserved. Scattered photon will have less power as compare to incident photon (les
Question 1. Explain how will you perform ward radiography? 2. Discuss the radiographic projections recommended for imaging the first to third cervical vertebrae? 3. Write
Accelaration is the rate of change of velocity.It defines how velocity is chaging with respect to time.
Influence the value of g Shape of the earth : (a) At poles : Generally 'g' value is inversely proportional to the radius of the earth ' r' . Due to flattening of the e
The wave nature of light is demonstrated by which of the following a) The photoelectric effect b) Colour c) The speed of light d) Diffraction Ans: The w
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