1. What is the speed of light in a vacuum, approximately?
- A3 x 10^8 m/s
- B3 x 10^6 m/s
- C3 x 10^10 m/s
- D3 x 10^5 m/s
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Answer: A
The speed of light in a vacuum is approximately 3 x 10^8 metres per second.
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General Science - Physics — Railway Questions & Practice
Practise 15 General Science - Physics questions from Railway for competitive exams such as UPSC, Banking, SSC and Railway. Read the worked questions below, check every answer with an explanation, and track what you get wrong.
15 questions · 0 quizzes · free to start
Practice questions on General Science - Physics — with answers
Try each question first, then open the answer. Explanations are included.
2. What is the SI unit of electric current?
- AAmpere
- BVolt
- COhm
- DWatt
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Answer: A
The SI unit of electric current is the Ampere, named after André-Marie Ampère.
3. What is the SI unit of energy?
- AJoule
- BWatt
- CNewton
- DAmpere
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Answer: A
The correct answer is 'Joule'.
4. What is the SI unit of power?
- AWatt
- BJoule
- CNewton
- DPascal
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Answer: A
The correct answer is 'Watt'.
5. Which type of lens is used to correct short-sightedness (myopia)?
- AConcave lens
- BConvex lens
- CBifocal lens
- DCylindrical lens
Show answer
Answer: A
The correct answer is 'Concave lens'.
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