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Two concentric conducting shells a and b are of radii R and 2R. A charge +q is centred at their center. Shell b is then earthed and a is given charge q. Find the charge on outer surfaces oboth shells.
Ans) THE charge on outer surface of A will be 2q and outer surface of B will be zero due to earthing charge on b will flow to earth.
Show that the Nusselt number for a sphere in a quiescent fluid is 2. Hint: Write the thermal resistance for the outer surface of the sphere in terms as both conductive and conve
How to find out neutral point ? What all things we require to equate or form a equation to find the neutral poind and how to do it?
An atom which has lost one electron would be: (1) Negatively charged () Positively charged (3) Electrically neutral (4) Carry double positive charge Ans: Elec
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Some phenomenon based on scattering: (i) Sky looks blue because of scattering. (ii) At the starting time of sunrise or sunset sun looks reddish. (iii) Danger signals are
1. What evidence suggests that light is a wave? What evidence suggests that light is a particle? 2. In what sense does the "information age" depend on the bending of light?
(i) The size examines cannot be operated to derive relations other than product of power functions, for example, s = ut + 1/2 at 2 or y = y 0 cosωt and so on, cannot be derived
Derive mathematical equation for an electromagnetic wave travelling in a charge free conducting medium in terms of electric field vector.
In which direction does air exert maximum pressure?
what is alternating current
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