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If travelling at same speeds, which of the following matter waves have the shortest wavelength?Correct option is(B).Alpha particle (He 2+ )According to de Broglie's equation λ= mvh​ where, λ= de-Broglie wavelengthh=6.626×10 −34 Js=Planck's constantm=mass of particlev= speed of particlethus, for different particles travelling at same speed, the wavelength is inversely proportional to their massesmass of electron = 9.110×10 −28 gmass of proton = 1.6727×10 −24 gmass of neutron = 1.6750×10 −24 gmass of Alpha particles 4​ He 2+ =4× mass of proton=4×1.6727×10 −24 =6.68×10 −24 gHigher is the mass shorter will be the wavelength associated with it:Therefore alpha particles having highest mass thus will have shortest wavelength.the correct answer isoption (b)

my frnds options (b) is correct for this question that is alpha particles

No. of desks in class 3 = 44No. of desks in class 4 = 36

No. of more desks in class 3 =44 - 36 = 8

No. of desks in class 3 =44, No. of desks in class 4=36, 44-36=8

no of desk in std 3 = 44" " " std4=36then the no of more desk in std 3. will be = 44-36=8 so answer is 8.....

there will be 8 desks more because 44-36= 8

No. of desk in class 3 =44No. of desk in class 4= 36No. of desk in class 3 = 44 -36= 8

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