In a railway track two rails are joined end to end...

Home / General Knowledge / Physics / Question

Examveda

In a railway track, two rails are joined end to end with a gap in between them because

A. Steel can be saved

B. Accidents due to contraction in winter can be avoided

C. Air-gaps are necessary for bearing the weight of running train

D. Accidents due to expansion in summer can be avoided

Answer: Option D

In a railway track, two rails are joined end to end with a gap in between them because accidents due to expansion in summer can be avoided.

This Question Belongs to General Knowledge >> Physics

Related Questions on Physics

A. Latent heat

B. Nuclear fusion

C. Refractive index

D. Stock value

View Answer

A. Collision between fast neutrons and nitrogen nuclei present in the atmosphere.

B. Action of ultraviolet light from the sun on atmospheric oxygen.

C. Action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere.

D. Lightning discharge in atmosphere.

View Answer

A. Work done in rolling is more than in lifting.

B. Work done in lifting the stone is equal to rolling it.

C. Work done in both is same but the rate of doing work is less in rolling.

D. Work done in rolling a stone is less than in lifting it.

View Answer

A. Viscosity of ink

B. Capillary action phenomenon

C. Diffusion of ink through the blotting

D. Siphon action

View Answer