IBDP Physics Question Analysis Topic: Physics - Short Questions
Exam Questions:
1) (a) Write the characteristic properties of nuclear force.
(b) Draw a plot of potential energy of a pair of nucleons as a function of their separation. Write two important conclusions that can be drawn from the graph.
2) Name the parts of the electromagnetic spectrum which is
(a) suitable for radar systems used in aircraft navigation
(b) used to treat muscular strain
(c) used as a diagnostic tool in medicine
Write in brief, how these waves can be produced.
Answers:
For IBDP Physics, you should know:
1) (a)
Strong, attractive short-range forces make up the nuclear force.
Proton-proton, proton-neutron, and neutron-neutron nuclear forces are approximately equal.
Electric charge has no effect on the nuclear force i.e., the nuclear force is independent of electric charge.
(b)
The nuclear force is short-ranged.
The nuclear force is attractive when the separation is greater than 1 fm and repulsive when it is less than 1 fm (1 fermi = 10–15 m).
2) (a) Radar systems used in aircraft navigation can be used with the help of microwaves.
Klystrons, magnetrons, and Gunn diodes are three specific vacuum tubes that are used to produce these rays.
(b) Muscle ache is treated with infrared waves.
Hot bodies and molecules are the sources of these rays.
(c) In medicine, X-rays are a diagnostic tool.
When high energy electrons are abruptly stopped on a metal of a high atomic number, these rays are produced.
Work hard for your IBDP Physics examination!
End of analysis. Great!
