Multiple choice

Directions: Each of the following questions consists of a question followed by three statements I, II and Ill. You have to study the question and the statements and decide which of the statement(s) is/are necessary to answer the question. What is the speed of a train? I. The length of the train is 240 metres. II. The train crosses a pole in 24 seconds. III. The train crosses a platform in 48 seconds.

  1. Both I and III

  2. Both l and II

  3. Both II and III

  4. Any two of the three

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Speed = Length / Time. Statement I gives length. Statement II gives time to cross a pole (Speed = 240/24 = 10 m/s). Statement III is not needed.

AI explanation

To find the speed of the train, you need the distance it travels and the time it takes. The train length of 240 meters from statement I provides the distance, and crossing a pole in 24 seconds from statement II provides the time. The speed is calculated as 240 divided by 24, which equals 10 meters per second. The result is Both l and II.

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