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A convex lens of refractive index 1.5 has a focal length of 18 cm in air. Measure the change in its focal length when it is immersed in water of refractive index.
Distinguish among the terms 'average value' and 'rms value' of an alternating current.
The immediate current from an a.c. source is I = 5 sin (314 t) ampere. What are the average and rms values of the current?
working principle of alpha,beta and gamma scintillation counter
A virtual image can be formed by one or more of the following single mirrors? Identify them. a) Plane mirror b) Concave spherical mirror c) Convex spherical mirror
A boy throws a ball vertically upward with a velocity of 6 meters per second. How long does it take the ball to return to the boy's hand? Ans: A boy throws a ball vertically
Explain 'drift velocity of free electrons'? Derive Ohm's law on the basis of the theory of electron drift.
if a 5-kg object experience a 10-n force for a 0.10-second, then what is momentum change of the object
Which atomic model did Erwin Schrodinger create? Schrodinger's wave equation was based on the Heisenberg uncertainty principal that the position and velocity of an electron can
who invented this?
The merry-go-round described in the previous problem is pushed with a constant force of 53 N. What is the angular acceleration?
on newtons ring determine the refractive indexl of a liquid
what is atom?
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