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. 24 cm

B. 28 cm

C. 32 cm

D. 35 cm

Answer: Option B

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 missile travels at a speed of 1260 km/h. Find the distance covered by the missile in just 1 second.

A. 350 meters

B. 400 meters

C. 380 meters

D. 300 meters

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Correct Answer: Option A

Explanation:
Speed in m/s = 1260 * (5/18) = 70 * 5 = 350 m/s. Therefore, distance covered in 1 second is 350 meters.

This question belongs to: Maths Time Speed and Distance

Question #2

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A train 150 meters long completely passes a stone in 15 seconds. Find the speed of the train in km/h.

A. 30 km/h

B. 45 km/h

C. 40 km/h

D. 36 km/h

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Correct Answer: Option D

Explanation:
Speed of train = 150 / 15 = 10 m/s. In km/h = 10 * (18/5) = 36 km/h.

This question belongs to: Maths Time Speed and Distance

Question #3

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A train 150 meters long is running at 72 km/h. How long will it take to pass a platform of length 250 meters?

A. 24 seconds

B. 18 seconds

C. 20 seconds

D. 15 seconds

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Correct Answer: Option C

Explanation:
Speed = 72 * (5/18) = 20 m/s. Total distance = 150 + 250 = 400 meters. Time = 400 / 20 = 20 seconds.

This question belongs to: Maths Time Speed and Distance

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