Mention any 4 sign conventions.
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Answer:
1.Metric signature.
2.Timelike convention.
3.Particle physics convention.
4.West coast convention.
5.Mostly minuses.
6.Landau–Lifshitz sign convention.
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✪Sign is taken as + (positive) behind the spherical mirror.
✪The height of image taken as + (positive) above the principal axis
✪The height of image taken as – (negative) below the principal axis.
✪the distance of image is taken as + (positive) from pole along the principal axis.
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