নোঙর করা একটি নৌকা ঢেউ দ্বারা দুলছে যার পরপর ক্রেস্টগুলি 100 মিটার দূরে। চলমান ক্রেস্টের তরঙ্গ বেগ 25 ms-1 হলে নৌকার দোলনের কম্পাঙ্ক কত?

This question was previously asked in
RRB ALP CBT I 29 Aug 2018 Shift 2 Official Paper
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  1. 100 হার্টজ 
  2. 0.25 হার্টজ 
  3. 625 হার্টজ 
  4. 25 হার্টজ 

Answer (Detailed Solution Below)

Option 2 : 0.25 হার্টজ 
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General Science for All Railway Exams Mock Test
20 Qs. 20 Marks 15 Mins

Detailed Solution

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গণনা:

প্রদত্ত : v = 25 m/s

পরপর ক্রেস্টের মধ্যে দূরত্বকে তরঙ্গের তরঙ্গদৈর্ঘ্য বলা হয় যা 100 মিটার হিসাবে দেওয়া হয়।

⇒ λ = 100 মি

আমরা জানি,

v = f λ

⇒ 25 = f × 100

⇒ f = 0.25 Hz

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