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If the velocity of hydrogen molecule is 5x 10 4 cm sec-1 then its de-Broglie wavelength is:
(1) 2 Å
(2) 4 Å
(3) 8 Å
(4)100 Å
Ans: 4 Å
If wavelength of photon is 2.2x10 -11 m, h= 6.6x 10 -34 J-sec, then momentum of photon is: (1) 3x 10 -23 kgms -1 (2) 3.33x 10 22 kgms -1 (3) 1.452x 10-
one two three four get on the dance floor..
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Q) Inside the sun four hydrogen nuclei combine to form a helium nucleus by which cycle? Ans) Proton-proton cycle.
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