/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q55P In Fig. 33-55, a 2.00鈥尘聽long ... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 33: Q55P (page 1005)

In Fig. 33-55, a 2.00鈥尘long vertical pole extends from the bottom of a swimming pool to a point 50.0cmabove the water. Sunlight is incident at angle 胃=55.0掳. What is the length of the shadow of the pole on the level bottom of the pool?

Short Answer

Expert verified

The length of the shadow of the pole on the level bottom of the pool is 1.07鈥尘

Step by step solution

01

Given

Angle of incidence 胃=550

l1=0.50鈥尘l2=1.50鈥尘

02

Understanding the concept

We can use Snell鈥檚 law to find the angle of refraction. Then using the geometry of the figure, we can find the length of the shadow of the pole on the level bottom of the pool.

Formula:

n1sin胃1=n2sin胃2

03

Calculate the length of the shadow of the pole on the level bottom of the pool

Ray diagram for the given problem:

According to Snell鈥檚 law,

n1sin胃1=n2sin胃2

But, here

胃1=90鈭�胃=900鈭�550=350

胃2=sin鈭�1n1sin鈥�胃1n2胃2=sin鈭�1(1.0)sin鈥�3501.33胃2=25.550

Now, from the figure,

x=l1tan鈥�胃1x=(0.50鈥�m)tan鈥�350x=0.35鈥尘

And,

L=l2tan鈥�胃2L=(1.50鈥尘)tan鈥�25.550L=0.717~0.72鈥尘

Therefore, the total length of the shadow is

x+L=0.35鈥尘+0.72鈥尘x+L=1.07鈥尘

Therefore, the length of the shadow of the pole on the level bottom of the pool is 1.07鈥尘

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 91影视!

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

The magnetic component of an electromagnetic wave in vacuum has an amplitude of 85.8鈥塶罢and an angular wave number of 4.00m-1.What are (a) the frequency of the wave, (b) the rms value of the electric component, and(c) the intensity of the light?

Question: (a) At what angle of incidence will the light reflected from water be completely polarized? (b) Does this angle depend on the wavelength of the light?

In Fig. 33-65, a light ray enters a glass slab at point A at an incident angle 胃1=45.0掳and then undergoes total internal reflection at point B. (The reflection at A is not shown.) What minimum value for the index of refraction of the glass can be inferred from this information?

During a test, a NATO surveillance radar system, operating at 12GHzat180kW of power, attempts to detect an incoming stealth aircraft at90km.Assume that the radar beam is emitted uniformly over a hemisphere. (a) What is the intensity of the beam when the beam reaches the aircraft鈥檚 location? The aircraft reflects radar waves as though it has a cross-sectional area ofonly0.22m2.(b) What is the power of the aircraft鈥檚 reflection? Assume that the beam is reflected uniformly over a hemisphere. Back at the radar site, what are (c) the intensity, (d) the maximum value of the electric field vector, and (e) the rms value of the magnetic field of the reflected radar beam?

Question: In Fig. 33-58, light from rayArefracts from material 1(n1=1.60)into a thin layer of material 2(n2=1.80) , crosses that layer, and is then incident at the critical angle on the interface between materials 2 and 3 .(a) What is the value of incident angle 胃A ? (b) If 胃A is decreased, does part of the light refract into material 3 ? Light from ray B refracts from material 1into the thin layer, crosses that layer, and is then incident at the critical angle on the interface between materials 2 and 3. (c) What is the value of incident angle胃B ? (d) If胃B is decreased, does part of the light refract into material 3 ?
See all solutions

Recommended explanations on Physics Textbooks

Electricity and Magnetism

Read Explanation

Rotational Dynamics

Read Explanation

Space Physics

Read Explanation

Further Mechanics and Thermal Physics

Read Explanation

Wave Optics

Read Explanation

Fluids

Read Explanation
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.