Question

write the definition of centre of curvature, principal axis, focus

Answer 1

HEllo

Centre of curvature:- The centre of curvature of a spherical mirror in which reflection of light takes place at a point
is called centre of curvature.

Principal Axis:-The straight line passing through th c and P is called Principal axis.

Focus:-when a parallel beam of light to the principal axis comes and reflect by concave mirror after the reflection of light they converse at a point,that point is called focus.


that's all

@sujeet

Answer 2

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$\bf\Huge\red{\mid{\overline{\underline{ ANSWER }}}\mid }$

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$\Large\fbox{\color{purple}{CORRECT \: QUESTION}}$

DEFINE THE FOLLOWING TERMS IN RELATION TO SPHERICAL MIRRORS

1. PRINCIPAL AXIS
2. FOCAL LENGTH
3. PRINCIPAL FOCUS
4. CENTER OF CURVATURE
5. RADIUS OF CURVATURE

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$\Large\fbox{\color{purple}{ SOLUTION }}$

★ PRINCIPAL AXIS ★

THE STRAIGHT LINE THAT GOES TO THE CENTRE OF THE SPHERICAL MIRROR AT RIGHT ANGLE TO THE MIRROR IS CALLED PRINCIPAL AXIS

★ FOCAL LENGTH ★

IT IS THE DISTANCE ON PRINCIPAL AXIS FROM PRINCIPAL FOCUS TO THE POLES OF SPHERICAL MIRROR

★ PRINCIPAL FOCUS ★

IT IS A POINT ON PRINCIPAL AXIS WHERE ALL REFLECTED RAYS ARE EITHER CONVERGE OR DIVERGE

★ CENTER OF CURVATURE ★

IT IS THE CENTRE OF THE SPHERE WHICH MIRROR IS A PART

★ RADIUS OF CURVATURE ★

IT IS A DISTANCE ON PRINCIPAL AXIS FROM CENTRE OF CURVATURE TO THE POLES OF SPHERICAL MIRROR

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$\bf\Large\red{ THANKS \: FOR \: YOUR}$

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