| 1 |
Which is not characteristic of Laser. |
- A. Monochromatic
- B. Coherent
- C. Intense
- D. Multi direction
|
| 2 |
Photons emitted in inner shell transition are. |
- A. Continuous X -rays
- B. Discontinuous X rays
- C. Characteristic X rays
- D. Energetic X rays
|
| 3 |
Kx -Xrays are produced due to transition of electron from. |
- A. K to L shell
- B. L to K shell
- C. M to K shell
- D. M to L shell
|
| 4 |
Charge on positron is: |
- A. Negative
- B. Positive
- C. Netural
- D. None of these
|
| 5 |
When meta I is heated sufficiently electrons are given off by the metal. This phenomenon is known as. |
- A. Photoelectric effect
- B. Piezo electric effect
- C. Thermionic emission
- D. Secondary emission
|
| 6 |
Black Body radiation spectrum is an example of: |
- A. Atomic spectra
- B. Line spectra
- C. Continuous spectra
- D. None of above
|
| 7 |
The series in infrared region is: |
- A. Paschen series
- B. Bracket series
- C. Pfund series
- D. All of above
|
| 8 |
Reflecting mirrors in laser is used to |
- A. Further stimulation
- B. For producing more energetic lasers
- C. Both (a) and (b)
- D. None of these
|
| 9 |
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>
|
| 10 |
Which of the following is one of the spectral series of atomic hydrogen? |
- A. Brockett series
- B. Balmer series
- C. P fund series
- D. All of above
|
