In the experiment of finding the Young’s modulus of a wire by the Searle’s method, the spherometer screw should be rotated always in one direction. This is done to avoid (a) The error due to changes in temperature (b) Slipping of the wire form the chucks (c) Back lash error (d) Error due to bending of support

in a physics laboratory a block x is balanced by a block Y of mass 200 kg,each are suspended from a balance of equal lever arms .the scale pan on X is at a height.H1=2 cm ,where as scale pan on Y is at height 1 cm above the floor.the error in weighing is (in gram)

consider the figure of a single riveted lap joint as follows

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cyclic heat engine operates between. temperature of 30 C. What is the least rate of heat rejection per kW net output of an engine. source temperature of 800 C and sink

 

 

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