Normal type of MCQ with one correct option
Given that R is Rydberg’s constant. When an electron in an atom of hydrogen jumps from an outer orbit n = 3 to an inner orbit n = 2 , the wavelength emitted radiations will be equal to:
Normal type of MCQ with one correct option
Band spectrum is produced by
H
He
H2
Na
Normal type of MCQ with one correct option
The difference in angular momentum associated with the electron in the two successive orbits of hydrogen atom is
Normal type of MCQ with one correct option
How does the energy difference between the consecutive energy level vary as the quantum number ‘n’ increase?
Increases
Decreases
Remains unchanged
First increases and then decreases
A,B
B
C,D
A,B,C & D
Comprehension
An electron orbits a stationary nucleus of charge + ze where z is a constant and e is the magnitude of electronic charge. It requires 47.2 eV to excite the electron form the second bohr orbit to third bohr orbit.
The value of z is
5
4
3
2
Both A and R are true and R is correct explanation of A
Both A and R are true and R is not correct explanation of A
A is true, R is false
A is false, R is true
Comprehension
An electron orbits a stationary nucleus of charge + ze where z is a constant and e is the magnitude of electronic charge. It requires 47.2 eV to excite the electron form the second bohr orbit to third bohr orbit.
The radius of first bohr orbit is
0.529 × 10(10 m
0.106 × 10(10 m
3.15 × 10(13 J-s
None
Comprehension
An electron orbits a stationary nucleus of charge + ze where z is a constant and e is the magnitude of electronic charge. It requires 47.2 eV to excite the electron form the second bohr orbit to third bohr orbit.
Angular momentum of electron in first Bohr orbit:
1.05 × 10(13 J(s
2.10 × 10(13 J-s
3.15 × 10(13 J-s
Can be (a) or (b)