62 f the velocity of hydrogen molecule is 5 x 104 cm sec-1, then its d

1.	62 f the velocity of hydrogen molecule is 5 x 104 cm sec-1, then its de Broglie wavelength is(1) 2 A) 4 A(3) 8 A(4) 100 A
Answer» One hydrogen molecule H2 has mas 2 a.m.u on first we divide it by avagadro no. we can get in grams ,then divide it by 100o to get mass in kg now we have mass in kg and also velocity in cm per second after converting velocity in m per second we use de broglie equation i.e. wavelength=planck constant/ mass * veloctity by putiing values we get answe in metres after it should be converted in angstrom so final answer is 4 angstrom

62 f the velocity of hydrogen molecule is 5 x 104 cm sec-1, then its de Broglie wavelength is(1) 2 A) 4 A(3) 8 A(4) 100 A

Answer»

One hydrogen molecule H2 has mas 2 a.m.u

on first we divide it by avagadro no. we can get in grams ,then divide it by 100o to get mass in kg

now we have mass in kg and also velocity in cm per second after converting velocity in m per second

we use de broglie equation i.e. wavelength=planck constant/ mass * veloctity

by putiing values we get answe in metres

after it should be converted in angstrom

so final answer is 4 angstrom