Q. "The difference between the length of a certain brass rod and that of a steel rod is clamped to be constant at all temperatures". The above statement (Solved)
1. can never be true
2. can be valid only for temperatures below 0?C
3. can be true provided their lengths are directly proportional to the linear coefficients of the material of the rod
4. can be true provided their lengths are directly proportional to the linear coefficients of the material of the rod
5. None of the above
- d. can be true provided their lengths are directly proportional to the linear coefficients of the material of the rod