Loading...
UPSC 2010: Two trains leave New Delhi at the same time. One travels north at 60 kmph and the other travels south at 40 kmph. After how many hours will the trains be 150 km apart?
(a)3/2
(b)15/4
(c)3/4
(d)15/2
Attempt This Question
Not attemptedCorrect Answer: (a) 3/2
When two objects move in opposite directions, relative speed is the sum of their speeds: 60 km/h + 40 km/h = 100 km/h. To be 150 km apart they need 150 ÷ 100 = 1.5 hours, i.e., 3⁄2 hours; so option (a) is correct.
Related UPSC Questions
More from Physics
2010easy
If a potato is placed on a pure paper plate which is white and unprinted and put in a microwave oven, the potato heats up but the paper plate does not
2010easy
India-based Neutrino Observatory is included by the Planning Commission as a mega science project under the 11th Five-Year Plan. In this context, cons
2010easy
What is the principle by which a cooling system (Radiator) in a motor car works?
Related Science & Technology Topics
2010Biotechnology & Genetics
Genetically modified “golden rice” has been engineered to meet human nutritional requirements. Which one of the following statements best qualifies go
2010Quantitative Aptitude
In a tournament 14 teams play league matches. If each team plays against every other team once only then how many matches are played?
Frequently Asked Questions
What is the correct answer to this UPSC 2010 Science & Technology question?▼
The correct answer is option (a): 3/2. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Physics question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2010, GS Paper 1, as Question 27. It falls under Science & Technology > Physics.
What is the difficulty level of this UPSC question?▼
This question is rated "easy". It tests basic recall and most well-prepared aspirants should answer it correctly.
How many UPSC Prelims questions have been asked from Physics?▼
UPSC has asked 104 questions from Physics (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.