Chapter 25: Q54PE (page 931)

Some telephoto cameras use a mirror rather than a lens. What radius of curvature mirror is needed to replace a $800 mm$ focal length telephoto lens?

Short Answer

Expert verified

The radius of curvature of the mirror is $1.6 m$

Step by step solution

Definition of the radius of curvature

The radius of the curvature lens is double the focal length of the lens.

Calculating radius of curvature

Given values:

$f = 800 mm$

First, we have to convert the unit into an SI unit:

$f = 800 . (1 mm \times \frac{1 \times 10^{‐ 3} m}{1 mm}) = 800 \times 10^{‐ 3} m$

The radius of curvature of the mirror can be written as:

$R = 2 f$

Substituting the value of focal length in the above equation, we get,

role="math" localid="1654076860828" $R = 2 \times 800 \times 10^{‐ 3} m = 1600 \times 10^{‐ 3} m = 1.6 m$

Hence, the radius of curvature of the mirror is 1.6m

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Some telephoto cameras use a mirror rather than a lens. What radius of curvature mirror is needed to replace a $800 mm$ focal length telephoto lens?

Short Answer

Step by step solution

Definition of the radius of curvature

Calculating radius of curvature

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Some telephoto cameras use a mirror rather than a lens. What radius of curvature mirror is needed to replace a800mmfocal length telephoto lens?

Short Answer

Step by step solution

Definition of the radius of curvature

Calculating radius of curvature

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Physics Textbooks

Further Mechanics and Thermal Physics

Thermodynamics

Astrophysics

Turning Points in Physics

Circular Motion and Gravitation

Magnetism and Electromagnetic Induction

Study anywhere. Anytime. Across all devices.

Some telephoto cameras use a mirror rather than a lens. What radius of curvature mirror is needed to replace a $800 mm$ focal length telephoto lens?