When an electron is moving with velocity of 2.188 x 106 ms-1 in the first orbit of Bohrs model of hydrogen. The de Broglie wavelength of electron is______________?

Related Mcqs:

1. Bohrs model is contradicted by__________________?

   A. Plancks theory
   B. Dual nature of matter
   C. Heisenbergs uncertainty principle
   D. All of these

2. Sommerfelds modification in Bohrs model is_______________?

   A. Orbit is cylindrical
   B. Orbit is elliptical
   C. Orbit is longitudinal
   D. Orbit is asymmetrical

3. 2nd orbit is ___________ away from nucleus of H-atom as compared to 1st orbit is ?

   A. 2-times
   B. 3-times
   C. 4-times
   D. 6 times

4. Wavelength of electron was verified by_________________?

   A. Moseley
   B. Davisson and Germer
   C. Einstein
   D. Roentgen

5. When electron jump into orbit 1 then series obtained is___________________?

   A. Lyman
   B. Paschen
   C. Pfund
   D. Brackett

6. Water Gas is a mixture of two gases Hydrogen & Carbon monoxide, while separating Hydrogen gas by liquification process which one is liquefied first__?

   A. Hydrogen Gas
   B. Carbon Monoxide Gas
   C. Both at same time
   D. None of them

   Submitted by: Aamir khan Hullio

7. Water Gas is a mixture of two gases Hydrogen & Carbon monoxide, while separating Hydrogen gas by liquification process which one is liquefied first__?

   A. Hydrogen Gas
   B. Carbon Monoxide Gas
   C. Both at same time
   D. None of them

   Submitted by: Aamir khan Hullio

8. Which one of the following radiation has the longer wavelength?

   A. infra red
   B. visible
   C. x-ray
   D. ultra violet
   E. gamma rays

   Submitted by: Dr.Tassawer-e-Meran

9. 1 mole of electron has mass in microgram_________________?

   A. 1.008 x 10-3
   B. 5.5 x 10-4
   C. 1.84 x 10-4
   D. 1.673 x 10-3

10. The maximum number of electron in a sub shell with ? = 3fs______________?

    A. 6
    B. 10
    C. 14
    D. 18