A bimetallic strip of total thickness 'x' is unbent (straight) at temperature theta_0. The coefficient of linear expansion of the two metals are alpha and 2 alpha respectively. Its radius of curvature (R), when its temperature is raised to theta_0 + Delta theta is

A bimetallic strip of total thickness 'x' is unbent (straight) at temp

1.	A bimetallic strip of total thickness 'x' is unbent (straight) at temperature theta_0. The coefficient of linear expansion of the two metals are alpha and 2 alpha respectively. Its radius of curvature (R), when its temperature is raised to theta_0 + Delta theta is
Answer» `(x)/( 4) [ (2 + 3 ALPHA ( Delta theta ) )/( alpha ( Delta theta ) ) ]` `(x)/( 4) [ (2- 3 alpha ( Delta theta ) )/( alpha ( Delta theta ) ) ]` `(x)/( 4) [ (3+ 2 alpha ( Delta theta ) )/( alpha ( Delta theta ) ) ]` `( x)/( 4) [ ( 3 + 2A ( Delta theta ) )/( 3 alpha ( Delta theta ) )]` Answer :A