Question

the alloy used in making pendelum of the clock to reduce the expansion and contraction is​

Answer 1

Answer:

INVAR

Explanation:

Invar is an alloy which has a small coefficient of linear expansion. The length of a pendulum made of invar does not change with temperature and hence the time period of oscillation remains the same. Hence the time shown by the clock is accurate. That's why 'invar' is used for making the pendulum of a clock.

Answer 2

Answer:

Invar

EXCLAMINATION:

Invar is a nickel-iron, low expansion alloy and is commonly used in applications that require high dimensional stability.