| 1 |
The light of laser is: |
- A. monochromatic
- B. dichromatic
- C. trichromatic
- D. Tetrachrmatic
|
| 2 |
The mass of Beta particle: |
|
| 3 |
When a ray of light passes from a denser to a rare medium it; |
- A. bends away form the normal to the interface
- B. bends towards the normal
- C. does no bend
- D. non of the above
|
| 4 |
Emission of ratiations from nucleus is said to be |
- A. Chemical reaction
- B. Atomic reaction
- C. Radioactivity
- D. Nuclear fission
|
| 5 |
If we increasing angle of incidence then at a particular angle incidence the angel of refraction is. |
- A. 45 <sup>o</sup>
- B. 60 <sup>o</sup>
- C. 30 <sup>o</sup>
- D. 90 <sup>o</sup>
|
| 6 |
Laser is used toproduce three -Dimensional image called. |
- A. Holograms
- B. Holography
- C. Lithotropsy
- D. Radioactive elements
|
| 7 |
Which type of rays are used in the solar system fitted on ships and submarines to find the hidden secrets under water: |
- A. x - rays
- B. C.T Scan
- C. Ultrasound
- D. Light
|
| 8 |
The Phenomenon of emission of radiations from radioactive elements is called: |
- A. Doping
- B. Allotropy
- C. Radioactivity
- D. Induction
|
| 9 |
The charge on alpha particle is: |
|
| 10 |
Recording of electrical activity of brain is said to be: |
- A. ultrasound
- B. MRI
- C. E.E.G
- D. E.C.G
|
