In a railway track, two rails are joined end to end with a gap tin between them because?
ریلوے ٹریک میں، دو ریلیں سرے سے آخر تک جوڑ دی جاتی ہیں اور ان کے درمیان گیپ ٹن ہوتا ہے کیوں؟
Answer: Accidents due to expansion in summer can be avoided
Explanation
Railway tracks are made of steel, which expands in summer heat.
The gaps between rails allow space for this expansion, preventing the tracks from buckling or derailing trains.
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