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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.
Q. Illustrate what is ntu in thermodynamics? Answer:- The ntu is nothing but number of transfer units it is one of the method utilized to find the heat transfer of hot and
#question.A tortoise can run with a speed of 0.12 m/s, and a hare can run 20 times as fast. In a race, they both start at the same time, but the hare stops to rest for 4.0 minutes.
Explain the term 'resolving power' of an astronomical telescope. How does it get affected on 1. Enhancing the aperture of the objective lens? 2. Enhancing the wavelength of t
If either screen or source or both are at preset distance from the diffracting device (obstacle or aperture), the diffraction is known as Fresnel type.
The Monkey and Zookeeper There is an attractive monkey down at the zoo. The monkey spends most of its day execution from a limb of a tree. The zookeeper feeds the monkey throug
1 Ampere: 1 ampere current is supposed to be flowing in a conductor if one coulomb of charge flows across section of the wire in one second.
Water is draining from tank A to tank B. The elevation difference between the two tanks is 10 m. The pipe connecting the two tanks has a sudden-expansion section as shown. The cros
The maximum value of electric field in an electromagnetic wave is 800V/m. Determine the maximum value of magnetic intensity and the average value of pointing vector.
a) Orbital movement of electrons b) On the source of orbital motion of electrons c) These are repelled in an external magnetic field i.e. have a tendency to g
A coil of inductance 159.2mH and resistance 40 is connected in parallel with a 30µF capacitor across a 240V, 50Hz supply. Calculate (a) the current in the coil and its phase ang
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