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Define the terms threshold frequency and stopping potential in relation to the phenomenon of photoelectric effect. How is the photoelectric current affected on enhancing the
(i) frequency
(ii) intensity of the incident radiations and why?
Define the construction of ultrasonic magnetostriction method. Construction: The ends of the ferromagnetic rod A and B are wound through the coils L 1 and L as given in fi
Thermistors Insulators and semi-conductors behave in a different way when the temperature increases, because their resistivity decreases. That is: the resistance of an insulato
composition of two simple harmonic motions at right angles to each other and having time periods in the ratio 1:2
a rectangular box with edges located at (0,0,0); (a,0,0); (0,b,0) and (0,0,c) is half-filled from z=0 up to z=c/2 with a dielectric with constsnt e. the top half is empty. the cove
Equilibrium can be spited in given types: (i) Stable equilibrium : After showing a charged particle from it's equilibrium point, if it goes back then it is called in stable equ
Alternating Current: (AC) Such a current can be obtained if a resistor is linked in series with a source of alternating voltage. This current alters its direction so many times
The electric field E because of a point charge at any point near it is explained as where q is the test charge and F is the force acting on it. What is the physical significance of
Davisson and Germer scattered electrons from a crystal of nickel. The scattered electrons formed a strong diffraction pattern. What important conclusion was drawn from this experi
figure of merit: amount of current through a conductor per unit deflection and why? the name figure of merit
Calorimetry is the act of calculating the heat of chemical reactions or physical changes, or the science of making such measurements. Calorimetry is performed with a calorimeter. T
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