explain the sign convention
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A sign convention is required for heat and work energy transfers, and the classical sign convention is selected for these notes. According to the classical sign convention, heat transfer to a system and work done by a system are positive; heat transfer from a system and work done on a system are negative.
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vivek430:
thanks bro but i am asking mirror sign convention
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A sign convention is required for heat and work energy transfers, and the classical sign convention is selected for these notes. According to the classical sign convention, heat transfer to a system and work done by a system are positive; heat transfer from a system and work done on a system are negative.
thanks but i am asking mirror sign convention
Oh ok
Object is always considered at the left of mirror
Distances measured along y-axis above the principal axis are taken as positive and that measured along y-axis below the principal axis are taken as negative.
Distances measured in the direction of the incident ray are taken as positive and the distances measured in the direction opposite to that of the incident rays are taken as negative.
All distances are measured from the pole of the mirror.
Distances measured along y-axis above the principal axis are taken as positive and that measured along y-axis below the principal axis are taken as negative.
Distances measured in the direction of the incident ray are taken as positive and the distances measured in the direction opposite to that of the incident rays are taken as negative.
All distances are measured from the pole of the mirror.
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