Distances measured below the principal axis are taken as ........

Positive

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Negative

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None

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Both

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Solution

The correct option is B Negative
According to the sign convention followed for mirrors and for lenses, the distances measured above the principal axis are taken as positive and the distances measured below the principal axis are taken as negative.
Hence, the correct answer is OPTION B.

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Similar questions

Q. All the distances measured above the principal axis are taken as

Q. From the understanding of cartesian sign convention for reflection by spherical mirror, students took part in group discussion for FA - 1 in classroom. Who is wrong in the group discussion?
Alpesh : All the distances are measured from the pole of a mirror parallel to the principal axis.
Beena : The distances measured in the direction of incident ray are taken positive.
Chamak : The height measured upward and perpendicular to principal axis is taken negative.
Daksha : The height measured downward and perpendicular to principal axis is taken as positive.

The distances of points that lie above the origin, which are measured along the Y-axis, are taken as ____, and the distances of points that lie below the origin, which are measured along the Y-axis, are taken as ____.

The distances of points that lie above the origin, which are measured along the Y axis, are taken as ____, and the distances of points that lie below the origin, which are measured along the Y axis, are taken as ____.

Q. All distances parallel to the principal axis are measured from the of the mirror.

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Distances measured below the principal axis are taken as ........

The correct option is B NegativeAccording to the sign convention followed for mirrors and for lenses, the distances measured above the principal axis are taken as positive and the distances measured below the principal axis are taken as negative.Hence, the correct answer is OPTION B.

The correct option is B Negative
According to the sign convention followed for mirrors and for lenses, the distances measured above the principal axis are taken as positive and the distances measured below the principal axis are taken as negative.
Hence, the correct answer is OPTION B.