The temperature compensated pendulum is designed to compensate for the change in length due to temperature rise. Figure shows one such pendulum. It consists of an isosceles triangular frame as shown in the figure. The pendulum is supported at mid-point of side AB, and it remains horizontal. Determine the ratio (l_(1) //l_(2) )^(2), so that the length of the pendulum remains same at all temperatures.

The temperature compensated pendulum is designed to compensate for the

1.	The temperature compensated pendulum is designed to compensate for the change in length due to temperature rise. Figure shows one such pendulum. It consists of an isosceles triangular frame as shown in the figure. The pendulum is supported at mid-point of side AB, and it remains horizontal. Determine the ratio (l_(1) //l_(2) )^(2), so that the length of the pendulum remains same at all temperatures.
Answer» `(alpha_1)/( alpha_2)` `( alpha_1)/( 2 alpha_2)` `( 2 alpha_2)/( alpha_1)` `( 4 alpha_2)/( alpha_1)` ANSWER :D