A rod of length 20 cm made of metal A ex...

A rod of length 20 cm made of metal A expands by 0.075 when its temperature is raised from `0^(@)`C to `100^(@)C`. Another rod of a different metal B having the same length expands by 0.045 cm for the same change in temperature. A third rod of the same length is composed of two parts, one of metal A and other of metal B. This rod expands by 0.065 cm for the same change in temperature. The portion made of metal A has the length :

20 cm

10 cm

15 cm

18 cm

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A rod of length 20 cm is made of metal. It expands by 0.075 cm when its temperature is raised from 0^(@)C to 100^(@)C . Another rod of different metal B having the same length expands by 0.045 cm for the same change in temperature. A third rod of the same length is composed of two parts, one of metal A and the oher of metal B . This rod expandss by 0.060 cm for the same change in temperature. The portion made of metal A has the length :

A metal rod (A) of 25 cm length expands by 0.050 cm when its temperature is raised from 0^@ C to 100^@ C . Another rod (B) of a different metal of length 40 cm expamds by 0.040 cm for the same rise in temperature. A third rod ( C) of 50 cm length is made up of pieces of rods (A) and (B) placed end to end expands by 0.03 cm on heating from 0^@ C . Find the lengths of each portion of the composite rod.

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A metal rod of 30 cm length expands by 0.075 cm when its temperature is raised from 0^@C to 100^@C . Another rod of a different metal of length 45 cm expands by 0.045 cm for the same rise in temperature. A composite rod C made by joining A and B end to end expands by 0.040 cm when its length is 45 cm and it is heated from 0^@C to 50^@C . Find the length of each portion of the composite rod.

A metal rod A of length l_(0) expands by Deltal when its temperature is raised by 100^(@)C . Another rod B of different metal of length 2l_(0) expands by Deltal//2 for same rise in temperature. A third rod C of length 3l_(0) is made up of pieces of rods A and B placed end to end expands by 2Deltal on heating through 100K . The length of each portion of the composite rod is :-

When does an elastic metal rod change its length?

A rod of length 50 cm is made of metal A and elongates by 0.2 cm when it is heated from 0^@C to 100^@C . Another rod made of metal B is of length 60 cm and elongates by 0.18 cm when heated from 0^@C to 100^@C . A composite rod of length 80 cm is made by welding pieces of rods A and B, placed end to end. When metal C is heated from 0^@C to 50^@C , it gets elongated by 0.08 cm. The length of the rod of metal A in the composite rod is

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