A composite rod made up of two rods AB and BC are joined at B. The rods are of equal length at room temperature and have equal masses. The coefficient of linear expansion α of AB is more than that of

Question

A composite rod made up of two rods AB and BC are joined at B. The rods are of equal length at room temperature and have equal masses. The coefficient of linear expansion $α$ of AB is more than that of BC. The composite rod is suspended horizontal by means of a thread at B. When the rod is heated:

Options:

Answer:

B

Solution:

AB expands more, shifting its centre farther from B.
With equal masses, its gravitational torque becomes larger.
AB tilts downward.

TestHub · Accepted Answer

AB expands more, shifting its centre farther from B. With equal masses, its gravitational torque becomes larger. AB tilts downward.

Physics - Heat & Thermo Question with Solution | TestHub

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