IBDP Physics Question Analysis Topic: Physics - Short Questions
Exam Questions:
1) Four nuclei of an element undergo fusion to form a heavier nucleus, with release of energy. Which of the two - the parent or the daughter nucleus - would have higher binding energy per nucleon?
2) Name the electromagnetic radiations used for water purification and eye surgery.
3) Electromagnetic waves used as a diagnostic tool in medicine are
X-rays
ultraviolet rays
infrared radiation.
ultrasonic waves
Answers:
For IBDP Physics, you should know:
1) In a nuclear fusion reaction, the unstable parent nuclei combine to form a heavier, more stable daughter nucleus, releasing some energy. Daughter nuclei are more stable than parent nuclei, thus. So, compared to the parent nucleus, the daughter nucleus has greater binding energy per nucleon.
2) For water purification and laser eye surgery, ultraviolet radiation is employed i.e., a wavelength shorter than that of visible light.
3) The answer is 4 - ultrasonic waves.
The electromagnetic waves employed as the most common diagnostic tool in medicine are x-rays. The image of the interior of the body is produced by the x-rays, which pass through the skin.
Work hard for your IBDP Physics examination!
End of analysis. Great!
