A block sliding down a rough 45^(@) inclined plane has half the velocity it would have had, the inclined plane been smooth. The coefficient of sliding friction between block and the inclined plane is

A block sliding down a rough 45^(@) inclined plane has half the veloci

1.	A block sliding down a rough 45^(@) inclined plane has half the velocity it would have had, the inclined plane been smooth. The coefficient of sliding friction between block and the inclined plane is
Answer» `(1)/(4)` `(3)/(4)` `(1)/(2sqrt(2))` `(1)/(SQRT(2))` Answer :B