ஒரு சக்கரத்தின் விட்டம் 84 செ.மீ ஆகும். 792 மீ தூரத்தை கடக்க எடுக்கும் முழுமையான சுழற்சிகளின் எண்ணிக்கை எவ்வளவு?

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RRB ALP Previous Paper 5 (Held On: 10 Aug 2018 Shift 3)
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  1. 300
  2. 350
  3. 330
  4. 320

Answer (Detailed Solution Below)

Option 1 : 300
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சக்கரத்தின் விட்டம் = 42 செ.மீ

சக்கரத்தின் ஆரம் = 42 செ.மீ

சக்கரத்தின் சுற்றளவு = 2πr

தூரம் = 792 மீ = 79200 செ.மீ

சுழற்சிகளின் எண்ணிக்கை, n = தூரம்/2πr

⇒ n = 79200/ {2 × (22/7) × 42}

∴ சுழற்சிகளின் எண்ணிக்கை, n = 300

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