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Arago spot (D.F.J. Arago)
A bright spot which appears in the shadow of a uniform disc being backlit through monochromatic light emanating from a point source.
What would happen if the principle of relativity is proved wrong?
With the help of a diagram, show the biasing of a light emitting diode (LED). Give its two benefits over conventional incandescent lamps.
a. Consider an x-ray machine with a step-up transformer consisting of a primary coil of 100 turns and a secondary one with 50000 turns. If the voltage applied across the primary co
how ultrasonic wave detect by piezoelectric detector ?
photo electric cells, types ,how they work
Until the time of Einstein, mass and energy were considered as two different physical quantities. But in 1905, with the help of postulates of the special theory of relativity Einst
Explain the term poly elastic and give some of example.
what will happen if gravity becomes zero?is it possible in earth?
What is the work done to take a particle of mass m from surface of the earth to a height equal to 2R (R=radius of earth )? Ans) Initial PE= - GMm/R Final PE = - GMm/3R
The order of density in nucleus is: (1)10 8 kg/cc (2)10 -8 kg/ cc (3)10 - 9kg/cc (4)10 12 kg/cc Ans; (4)10 12 kg/cc
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