When A Strip Made Of Iron (α1) And Copper (α2 > α1) Is Heated: 

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Question

When a strip made of iron (α1) and copper 2 > α1) is heated: 

Solution

Correct option is

It bends with iron on concave side

 

As α1 < α2, hence (∆L)Fe < (∆L)Cu   

i.e., iron rod will bend concave side. 

Testing

SIMILAR QUESTIONS

Q1

Three liquids with masses m1m2m3 are thoroughly mixed. If their specific heats are s1s2s3 and their temperature θ1θ2θ3 respectively, then the temperature of the mixture is:    

Q2

80 gm of water at 30oC is poured on a large block of ice at 0oC. The mass of ice that melts is:

Q3

250 gm of water and equal volume of alcohol of mass 200 gm are replaced successively in the same calorimeter and cool from 60oC to 55oC in 130 seconds and 67 seconds respectively. If the water equivalent of the calorimeter is 10 gm, then the specific heat of alcohol in cal/gm-oC is:   

Q4

The sprinkling of water reduce the temperature of a closed room because: 

Q5

Two bars of copper having same length but unequal diameter are heated to the same temperature. The change in length will be:  

Q6

The beaker is completely filled with water at 4oC. It will overflow:

Q7

When a metal rod is heated it expands because: 

Q8

Expansion during heating: 

Q9

Two rods of lengths L1 and L2 are made of materials whose coefficients of linear expansion are α1 and α2. If the difference between the two lengths is independent of temperature:  

Q10

An iron tyre is to be fitted onto a wooden wheel 1.0 m in diameter. The diameter of thetyre is 6 mm smaller than that of wheel. The tyre should be heated so that its temperature increases by a minimum of (coefficient of volume expansion of iron is 3.6× 10–5/oC):