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 1996Science and Technology · Physics: Modern Physics
Q1. Consider the following statements: At the present level of technology available in India, solar energy can be conveniently used to: 1. Supply hot water to residential buildings. 2. Supply water for minor irrigation projects. 3. Provide street lighting. 4. Electrify a cluster of villages and small towns. Of these statements
Explanation
The industrial ages gave us the understanding of sunlight as an energy source. India is endowed with vast solar energy potential. About 5,000 trillion kWh per year energy is incident over India’s land area with most parts receiving 4-7 kWh per sqm per day. Solar photovoltaic power can effectively be harnessed providing huge scalability in India.
Statement 1 is correct: Solar water heaters are widely used for residential purposes.
Statement 2 is correct: Solar-powered pumps are increasingly utilized for small-scale irrigation. Governments under PM KUSUM are advocating for proliferation of such pumps.
Statement 3 is correct: Solar street lights are common in both rural and urban areas.
Statement 4 is correct: Solar microgrids and standalone systems can provide electricity to remote villages and small towns.
Answer key for these questions
Q
UPSC year
Correct answer
1
1996
(a) 1, 2, 3 and 4 are correct
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.
