The gap between any two rails, each of length 'l' laid on a railway track equals x at 27°C. When the temperature rises to 40°C, the gap closes up. The coefficient of linear expansion of material of the rail is 'alpha'. The length of a rail at 27°C will be

The gap between any two rails, each of length 'l' laid on a railway

1.	The gap between any two rails, each of length 'l' laid on a railway track equals x at 27°C. When the temperature rises to 40°C, the gap closes up. The coefficient of linear expansion of material of the rail is 'alpha'. The length of a rail at 27°C will be
Answer» <html><body><p>`(x)/( 2 <a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a> alpha)`<br/>`( x)/( 13 alpha)`<br/>`( <a href="https://interviewquestions.tuteehub.com/tag/2x-301182" style="font-weight:bold;" target="_blank" title="Click to know more about 2X">2X</a>)/( 13 alpha) `<br/>None</p>Answer :B</body></html>