the characteristic X-ray spectra, the frequency of K α line is 9.87A if moseley equation is followed then the atomic number of the element
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A train leaves Delhi at 9 a.m. at a speed of 30 kmph. Another train leaves at 2 p.m. at a speed of 40 kmph on the same day in the same direction. How far from Delhi, will the two trains meet?
(A) 300 km
(B) 400 km
(C) 600 km
(D) None of these
EXPLANATION ALSO.
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Answer:
222000
Explanation:
555555555555+5555555
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