Warning: foreach() argument must be of type array|object, bool given in /var/www/html/web/app/themes/studypress-core-theme/template-parts/header/mobile-offcanvas.php on line 20

Your camera’s zoom lens has an adjustable focal length ranging from 80.0to 200mm. What is its range of powers?

Short Answer

Expert verified

The camera lens has an adjustable focal length with range 80mm-200mm has a range of power 5.00D-12.5D.

Step by step solution

01

Concept Introduction

The focal length is the distance between a convex lens or a concave mirror and the focal point of a lens or mirror. It is the point at which two parallel light beams meet or converge. Depending on the nature of the lens and mirror (concave or convex), the focal length varies with the sign (positive or negative).

02

Information Provided

  • Focal Length of the lens: 80mm-200mm.
03

Calculation for a range of powers

The power in dioptres of lenses is inversely proportional to the focal length of the; where the power is given by,

P=1f

That is, the minimum focal length corresponds to the maximum power, and vice-versa, keeping in mind that the focal length must be substituted in meters in order to obtain the proper unit of dioptre for power.

The minimum power is –

role="math" localid="1654064610343" Pmin=1fmax=1200×103m=5.00D

The maximum power is –

Pmax=1fmin=180.0×103m=12.5D

Therefore, the values for power are Pmin=5.00D and Pmax=12.5D.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

(a) What is the focal length of a magnifying glass that produces a magnification of \(3.00\) when held \(5.00{\rm{ }}cm\) from an object, such as a rare coin? (b) Calculate the power of the magnifier in diopters. (c) Discuss how this power compares to those for store-bought reading glasses (typically \(1.0\) to \(4.0\)). Is the magnifier’s power greater, and should it be?

Figure 25.49shows a light bulb between two mirrors. One mirror produces a beam of light with parallel rays; the other keeps light from escaping without being put into the beam. Where is the filament of the light in relation to the focal point or radius of curvature of each mirror?

A camera with a 50.0 mm focal length lens is being used to photograph a person standing 3.0 m away.

(a) How far from the lens must the film be?

(b) If the film is 36.0 mm high, what fraction of a 17.5 m tall person will fit on it?

(c) Discuss how reasonable this seems, based on your experience in taking or posing for photographs.

What is meant by a negative magnification? What is meant by a magnification that is less than 1in magnitude?

Referring to the electric room heater considered in the first example in this section, calculate the intensity of IR radiation in \({\bf{W}}/{{\bf{m}}^{\bf{2}}}\) projected by the concave mirror on a person \({\bf{3}}.{\bf{00}}{\rm{ }}{\bf{m}}\) away. Assume that the heating element radiates \({\bf{1500}}{\rm{ }}{\bf{W}}\) and has an area of \({\bf{100}}{\rm{ }}{\bf{c}}{{\bf{m}}^{\bf{2}}}\), and that half of the radiated power is reflected and focused by the mirror.

See all solutions

Recommended explanations on Physics Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free