There is along steel pope fixed in a compound, One boy stands at one end of the pipe and places his ear at the end. If another boy strikes the other portion of the pipe, the first boy will hear

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معزز ممبران، خدمات کے معیار کو بہتر کرنے کے لئے ہم نے ایف جی اسٹڈی کوئز کے ڈیزائن اور ڈھانچے کو تبدیل کیا ہے۔جس سے کچھ پرانے صفحات کا ایڈریس تبدیل ہوچکا ہے۔اگر آپ کو مطلوبہ مواد/صفحہ نہیں مل رہا تو براہ کرم اس لنک پر جائیں
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There is along steel pope fixed in a compound, One boy stands at one end of the pipe and places his ear at the end. If another boy strikes the other portion of the pipe, the first boy will hear

Tow sounds

One sound

Infinite sounds

No sound