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Na+ ion is isoelectronic with:
(1) Li+
(2) Mg+2
(3) Ca+2
(4) Ba+2
Ans:(b) Mg+2
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Discuss the diffraction of light through n slits using plane transmission grating.
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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
to find neuteral point of earth
define
Draw the final image formed by two lenses: An optical imaging system consists of two positive lenses (L1 and L2). L1 has a focal length f 1 = 10 cm, and L2 has a focal length
ohm; Omega; O (after G. Ohm, 1787-1854): The derived SI unit of electric resistance, described as the resistance among two points on a conductor while a constant potential dif
Review guide: gases: heat, temperature, volume
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