Choose the correct relation

Two objects are projected at angles 30^(@) and 60^(@) respectively with respect to the horizontal direction. The range of two objects are denoted as R_(30^(@)) and R_(60^(@)) . Choose the correct relation from the following.

Two bodies having masses m_(1) and m_(2) are dropped from heights h_(1) and h_(2) respectively. They reach the ground after times t_(1) and t_(2) and strike the ground with velocities v_(1) and v_(2) respectively. Choose the correct relations from the following:

Two bodies of masses (m_(1)) and (m_(2)) are droppded from heithts h_(1) and h_(2) , respectively. They reach the ground after time t_(1) and t_(2) and strike the ground with v_(1) and v_(2) , respectively Choose the correct relations from the following.

Two bodies of masses (m_(1)) and (m_(2)) are droppded from heithts h_(1) and h_(2) , respectively. They reach the ground after time t_(1) and t_(2) and strike the ground with v_(1) and v_(2) , respectively Choose the correct relations from the following.

The figure shows a glass tube (linear co-efficient of expansion is alpha ) completely filled with a liquid of volume expansion co-efficient gamma . On heating length of the liquid column does not change. Choose the correct relation between gamma and alpha

Choose most correct relation CHILD : FAMILY : :