A wheel makes 1000 revolutions to cover a distance of 880 meters. Find the diameter of the wheel. MCQ with Answer and Explanation

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A wheel makes 1000 revolutions to cover a distance of 880 meters. Find the diameter of the wheel.

A. 32 cm

B. 35 cm

C. 28 cm

D. 24 cm

Answer: Option C

Solution (By JKSSB Mock Tests)

Distance covered in 1 revolution = 880 / 1000 = 0.88 meters = 88 cm. Circumference = 2 * (22/7) * r = 88 cm => (44/7) * r = 88 => r = 14 cm. Diameter = 2r = 28 cm.

This question belongs to: Maths Time Speed and Distance

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Question #1

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A train 140 meters long passes a stationary observer in 7 seconds. How long will it take to cross a platform 260 meters long?

A. 22 seconds

B. 18 seconds

C. 24 seconds

D. 20 seconds

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Correct Answer: Option D

Explanation:
Speed of train = 140 / 7 = 20 m/s. Total distance to pass platform = 140 + 260 = 400 meters. Time required = 400 / 20 = 20 seconds.

This question belongs to: Maths Time Speed and Distance

Question #2

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A train 180 meters long is tracking at a uniform speed of 72 km/h. How many seconds will it take to clear a stationary passenger standing on a platform?

A. 11 seconds

B. 10 seconds

C. 8 seconds

D. 9 seconds

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Correct Answer: Option D

Explanation:
Speed of train = 72 * (5/18) = 20 m/s. Time taken to clear the passenger = 180 / 20 = 9 seconds.

This question belongs to: Maths Time Speed and Distance

Question #3

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In a 600-meter race, A finishes in 66 seconds and B finishes in 75 seconds. By what distance does A beat B?

A. 75 meters

B. 68 meters

C. 72 meters

D. 80 meters

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Correct Answer: Option C

Explanation:
Speed of B = 600 / 75 = 8 m/s. Distance covered by B when A crosses the finish line at 66 seconds = 8 * 66 = 528 meters. Winning margin = 600 - 528 = 72 meters.

This question belongs to: Maths Time Speed and Distance

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