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Can you explain lens maker's formula. Derive the mathematical expression for the effective focal length of two thin lenses in contact.
A bird flies in the east direction with a speed of 5 ms -1 . The wind is blowing towards north at a speed of 3 ms -1 . Determine the relative velocity of the bird with
Is it probable for the electric field to be non-zero at a point in space where the electric potential is zero? Ans: Regard as for instance the case of an electric potential
Why newton rings are circular?
definition, Working principal, applications ??
A certain radioactive substance has a half-life of 40 minutes. How much of an original 100 grams substance will remain after 2 hours? solution) m= m0/2t/T m=100 gms.. t=2 hours
In utilizing Kirchoff's Laws to analyze a circuit a student correctly calculates a negative value for one of the currents in the circuit. What does the negative sign signify?
Get an expression for work done during reversible isothermal expansion. Get the terms open, isolated and closed system. Give examples.
Q. What are the wave fronts? Answer:- (Physics) A wave front is an fantasy surface joining all points in space that are reached at the same instant by a wave propagating th
Explain about the laser cutting and welding. Laser cutting and Welding: Laser cutting is a technology which uses a laser to cut materials, and is generally used for industri
The following three impedances are connected in series across a 40V, 20kHz supply: (i) a resistance of 8, (ii) a coil of inductance 130µHand5 resistance, and (iii) a 10 r
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