McqMate
| Q. |
On what factors do the intensity of secondary electrons depend upon? |
| A. | shape of the irradiated object |
| B. | chemical composition of the irradiated object |
| C. | number of electrons ejected |
| D. | size and chemical composition of the irradiated object, number of electrons ejected and on the number of electrons reabsorbed by surrounding |
| Answer» D. size and chemical composition of the irradiated object, number of electrons ejected and on the number of electrons reabsorbed by surrounding | |
| Explanation: the irradiations in sem causes secondary electrons to be ejected from the specimen thereby generating a signal that is proportional to the number of electrons striking the anode. the intensity or the number of secondary electrons depends on the shape and the chemical composition of the irradiated object and also on the number of electrons ejected and the number of electrons reabsorbed by surrounding. | |
View all MCQs in
Engineering PhysicsNo comments yet