Physics: Modern Physics: UPSC Previous Year Questions (Science and Technology)
1 previous year UPSC Prelims question on Physics: Modern Physics (Science and Technology). Choose an option to see the answer and explanation.
Explanations state facts as of the year each question was asked; words like “recently” refer to that year.
Showing 1–1 of 1 question
UPSC 2007Science and Technology · Physics: Modern Physics
Q1. Which of the following types is used by computed tomography employed for visualisation of the internal structure of the human body?
Explanation
Option (a) is correct: Computed Tomography (CT), also known as a CT scan, uses X-rays to create detailed cross-sectional images of the internal structures of the human body. The X-rays rotate around the body, and a computer processes the data to generate 3D or 2D images. Options (b), (c) and (d) are incorrect:
Sound waves are used in ultrasound imaging not in CT Scans. Magnetic resonance is associated with MRI, which uses magnetic fields and radio waves, not X-rays. Radio isotopes are used in nuclear medicine, such as PET scans.
Answer key for these questions
Q
UPSC year
Correct answer
1
2007
(a) X-ray
Frequently asked questions
How many previous year UPSC questions are there on Physics: Modern Physics?
This page covers 1 previous year UPSC Prelims GS Paper-I questions on Physics: Modern Physics (Science and Technology), asked from 1996 to 2007. Each has the correct answer and an explanation.
How should I use previous year UPSC questions for Prelims?
Attempt each question first, then open the answer and read the explanation for every option. Repeat by chapter, and track which statements UPSC reuses across years. Previous year questions show the exam pattern and difficulty level.
Which years are covered for Physics: Modern Physics?
Questions on Physics: Modern Physics (Science and Technology) are available for 6 years, from 1996 to 2007. Use the Year filter to practise a single paper.
