| 1 |
The wavelength associated with the protons moving at speed of 40 m/s is. |
- A. 7.20 nm
- B. 9.02
- C. 15.7 nm
- D. 17.3 nm
|
| 2 |
A block body is an ideal: |
- A. Absorber
- B. Radiator
- C. Both a & b
- D. None of above
|
| 3 |
An electron miroscope emplys which to one of the following particles? |
- A. Electron ahve a wave nature
- B. Electrons can be focused by an electric field
- C. Electrons can be focused by a magnetic field
- D. All of the above
|
| 4 |
In Compton scatting, the value of shift is equal to Compton's wavelength, when X-rays is scattered at the angle of. |
- A. 90<sup>o</sup>C
- B. Zero
- C. 120<sup>o</sup>C
- D. 45<sup>o</sup>C
|
| 5 |
All motions are |
- A. Absolute
- B. Uniform
- C. Relative
- D. Variable
|
| 6 |
The existence of positron in 1928 was predicted by |
- A. Anderson
- B. Dirac
- C. Chadwick
- D. Plank
|
| 7 |
Who explained the photo electric effect. |
- A. Max Plank
- B. Einstein
- C. Henry
- D. Rutherford
|
| 8 |
Anti particle of electron is |
- A. Proton
- B. Photon
- C. Neutron
- D. Positron
|
| 9 |
The position has charge which is in magnitude equal to the charge on |
- A. Electron
- B. Proton
- C. <span style="font-weight: bold; color: rgb(106, 106, 106); font-family: arial, sans-serif; font-size: small;">β particle</span>
- D. All
|
| 10 |
Pair production occurs only when energy of photon is at least equal in: |
- A. 1.02keV
- B. 1.02 eV
- C. 1.02 MeV
- D. 1.02 GeV
|