Home Physics Electron, Photon, Photoelectric Effect and X-rays X - Rays The characteristic X-ray radiation is emitte…
Physics Electron, Photon, Photoelectric Effect and X-rays X - Rays Single Correct MCQ
Published on: September 12, 2026

The characteristic X-ray radiation is emitted, when

A
The electrons are accelerated to a fixed energy
B
The source of electrons emits a monoenergetic beam
C
The bombarding electrons knock out electrons from the inner shell of the target atoms and one of the outer electrons falls into this vacancy
D
The valence electrons in the target atoms are removed as a result of the collision

Share this question

For Instagram sharing, use “Apps” on mobile or copy the link.

Text Solution

Verified by Experts
The correct answer is:
C
Step 1: Characteristic X-ray radiation occurs when the bombarding electrons have sufficient energy to knock out inner-shell electrons from target atoms.
Step 2: Once an inner-shell electron is ejected, a vacancy is created.
Step 3: An electron from an outer shell then transitions to fill this vacancy, releasing energy in the form of X-ray photons.
Therefore, the correct option is C.

Prepare Smarter with CGP Edu

Get practice questions, solutions, and test series in one place.

Write a Review

Share your experience with this question and solution.

Commentary

Send your comment, doubt, correction, or feedback to admin.

Student Reviews

What students say about this solution

No reviews yet. Be the first to write a review.

Similar Questions

Explore conceptually related problems

CG
CGP Question Assistant Question Bank + AI Help
Hi! Type your question or upload one screenshot. First I will search related questions from CGP Edu Question Bank. If none match, type YES and I will solve it with AI.
Upload only one screenshot at a time. Flow: Question Bank first → If not matched, type YES for AI solution.