alleryএকটি চাকা 2500 আবর্তনে 22 km দূরত্ব অতিক্রম করে। চাকার ব্যাস কত? (π = 22/7 নিন)
A2.8 m
B1.4 m
C5.6 m
D3.5 m
Answer & Solution
Correct answer: A. 2.8 m
1।
প্রতি বিপ্লবের দূরত্ব = মোট দূরত্ব / আবর্তন = 22000 m / 2500 = 8.8 মি.
2।
এটি পরিধির সমান, তাই πd = 8.8, দিচ্ছে d = 8.8 × 7/22।
3।
d = 61.6/22 = 2.8 মি।
_সূত্র: RRB গ্রুপ D (RRC) PYQ, অনুষ্ঠিত 27-10-2013, Q.99._
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