| 1 |
Balmer series lies in |
- A. Visible region
- B. Invisible region
- C. Ultraviolet region
- D. Infrared region
|
| 2 |
The value of Rydberg constant is |
- A. 1.0974 x 10<sup>7</sup> m<sup>-1</sup>
- B. 1.0974 x 10<sup>-7</sup> m<sup>-1</sup>
- C. 1.0974 x 10<sup>6</sup> m<sup>-1</sup>
- D. 1.0974 x 10<sup>-6</sup> m<sup>-1</sup>
|
| 3 |
The radius of 10th orbit in hydrogen atom is. |
- A. 0.053 nm
- B. 0.53 nm
- C. 5.3 nm
- D. 53 nm
|
| 4 |
Boher proposed his atomic model in: |
- A. 1910
- B. 1911
- C. 1912
- D. 1913
|
| 5 |
Helium Neon Laser Beam emitted from discharge tube has a colour. |
- A. Blue
- B. Green
- C. Red
- D. Black
|
| 6 |
For Holography we use |
- A. X ray
- B. Laser
- C. gama rays
- D. Beta rays
|
| 7 |
Hydrogen atom spectrum does not lie in |
- A. Ultraviolet region
- B. Visible region
- C. Infrared region
- D. X ray region
|
| 8 |
The unit of Rh is. |
- A. ms-1
- B. m
- C. m<sup>2</sup>
- D. m<sup>-1</sup>
|
| 9 |
The following gas was identified in the sun using spectroscopy |
- A. Hydrogen
- B. Helium
- C. Carbon
- D. Nitrogen
|
| 10 |
If 13.6 eV energy is required to ionize the hydrogen atom, then the required energy to remove an electron from n=2 is: |
- A. 10.2 eV
- B. 0 eV
- C. 3.4 eV
- D. 6.8 eV
|
