Physics · Optics
When using the sign convention for spherical mirrors, which direction along the principal axis is considered positive?
- 1Upwards from the principal axis
- 2Downwards from the principal axis
- 3To the right of the origin (along +x-axis)✓
- 4To the left of the origin (along -x-axis)
Correct answer
To the right of the origin (along +x-axis)
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