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Chapter 33: Q. 19 (page 955)

You need to use your cell phone, which broadcasts an 800MHzsignal, but you're behind two massive, radio-wave absorbing buildings that have only a15mspace between them. What is the angular width, in degrees, of the electromagnetic wave after it emerges from between the buildings?

Short Answer

Expert verified

Angular width of electromagnetic radiation is2.86°.

Step by step solution

01

Formula for angular width 

The width of the angular fringe is that the distance seen between centre fringe and therefore the slit. It also demonstrates how far the fringes are angularly.

Angular width is,

θ=2λa

λis wavelength.

ais length of the slit.

02

Calculation of angular width

Angular width of electromagnetic wave:

θ=2λa

So,

θ=2caν

=2×3×10815×8×108

=0.05rad

=2.86°

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Most popular questions from this chapter

A 0.50-mm-wide slit is illuminated by light of wavelength 500nm. What is the width (inmm)of the central maximum on a screen2.0mbehind the slit?

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