Question

In Davisson - Germer experiment, the intensity of the electron beam scattered in a given direction is measured by the electron detector.
True=1, false=0.

Answer 1

Hint: To answer this question one should understand Davisson- Germer experiment properly. By finding the function of the detector used in the experiment for detecting electrons will be the answer. The diagram of the experiment should be correct here as the detector will detect electrons by getting current from the circuit.

Complete answer:
Davisson-Germer Experiment: This experiment gives us confirmation of the fact the electrons are of dual nature.

Working of Davisson-Germer Experiment: This experiment starts off with an electron which has been fired by an electron gun. The gun is actually accelerating the beam. The beam is able to fire electrons on the nickel target. The nickel target is a crystal which is beneficial in this experiment. We can also see the detector by which we will make observations related to scattered electrons deviated into different directions. This deviation or we can say bending is done by the electron after diffracting from the target. The detector here is made up of a current and it is attached to the galvanometer. Its duty is to measure intensity of the beam diffraction.

The deflections of electrons by a Nickel target makes the electrons look like a wave created by them. This clearly shows that there is a deflection of electrons in different directions instead of one. As it needs to be measured properly, the scientists decided to use an electron detector only. Therefore, the given statement is true that the intensity of the electron fired by an electron gun, which is then scattered by a Nickel targeted crystal, scattering them in a given direction is measured by an electron detector is a true statement.

Hence, the correct answer is true = 1.

Note:
 It will be beneficial to understand and learn the following points.
(1) The action of hitting the nickel crystal by electron comes under the action of deflection. We can also say it is reflection.
(2) The electron beam shot by the electron gun was due to heat generated in its circuit.
(3) Electron detector used here is moveable in a semi-circular type of arc.
(4) Nickel crystal was involved in this experiment so that electrons scattered in different directions are traced correctly.