gravity =9.8m/s

A copper rod is 'l m long at 20 degree Celsius. At what temperature will it * 2 points be shorter by 1mm? Take the value of coefcient of expansion of Cu = 1.7 x 10-5/C"{0} O 8.82 degree Celsius O -8.82 degree Celsius O 38.82 degree Celsius O -38.82 degree Celsius * 1 point According to the rst law of thermodynamics, applied to a gas. the increase in the internal energy during any pro\": 0 equals the heat input minus the work done on the gas equals the heat input plus the work done on the gas is independent of the heat input 000 is independent of the work done on the gas * 1 point Standing Wave-3 result from the superposition of two waves of: O the same amplitude and frequency and opposite directions of propagation 0 Option 5 O the same amplitude,slightly different frequency, and the same direction of propagation O the same amplitude, slightly different frequency, and opposite directions of propagation. O the same amplitude, frequency, and direction of propagation