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The most common type at mirage is an illusion that light from faraway objects is reflected by a pool of water that is not really there. Mirages are generally observed in deserts when there is a hot layer of are near the ground. Given that the reflective index of air is lower for air at higher temperatures, how mirages can be formed?

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Amal Jeeva
Amal JeevaLv10
6 Dec 2020

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

25) A negative magnification for a mirror means that

A) the image is upright, and the mirror could be either concave or convex. 

B) the image is inverted, and the mirror is concave.

C) the image is inverted, and the mirror could be either concave or convex.

D) the image is upright, and the mirror is convex

E) the image is inverted and the mirror is convex. 

 

26) An object is placed in front of a thin lens, Which statements are correct in describing the image formed by the lens? (There could be more than one correct choice.)

A) If the lens is convex, the image must be real. 

B) If the image is real, then it is also inverted. 

C) If the image is real, then it is also upright. 

D) If the lens is convex, the image will never be virtual. 

E) If the lens is concave, the image must be virtual. 

 

27) When a beam of light, originally travelling in air, enters a piece of glass having an index of refraction of 3/2, its frequency

A) is unaffected 

B) is reduced to 2/3 its original value. 

C) increased by a factor of 3/2. 

 

28) The index of refraction of a type of glass is 1.50, and the index of refraction of water is 1.33. If the light enters water from the glass, the angle  of refraction will be

A) equal to the angle of incidence.

B) less than the angle of incidence. 

C) greater than the angle of incidence. 

 

29) Which of the following terms describe lenses that are thinner at the center than the edges? (there could be more than one correct choice.)

A) concave lenses

B) converging lenses

C) diverging lenses

D) convex lenses 

 

30) You may have seen ambulances on the street with the letters of the word AMBULANCE written on the front of them, in such a way to appear correctly when viewed in your car's rear-view mirror. (See the figure.) How do the letters appear when you look directly at the ambulance (not through the mirror)? 

Hi everyone,
I'm International Students and I have difficault to understand someproblems in physics. I want to do extra work to be ready forMidtearm.
Please if there is any one can help me by showing me how to solveit.
and if u can show me the steps because I will use it asnotes.

1-What are the metric prefixes for ten and tenth?

2-If you multiplied 7774 m by 36 m, how many significant figuresshould you report in your answer?

3-A ball is dropped:
What is its initial speed?
What is the magnitude of its initial acceleration?


4-A jogger jogs two blocks directly north.
(a) How do the jogger's average speed and the magnitude of theaverage velocity compare?
average speed ( ) magnitude of average velocity
(b) If the jogger's return trip follows the same path, how doaverage speed and magnitude of the average velocity compare for thetotal trip?
average speed ( ) magnitude of average velocity



5-A child's cubic play block has a mass of 115 g and sides of 5.2cm. When placed in a bath tub full of water, will the cube sink orfloat?
(sink) or (float)

6-A ball with a radius of 8 cm and a mass of 550 g is thrown into alake. Will the ball sink or float?
(sink) or (float)

7-Persons A and B do the same job, but B takes longer
Who does the greater amount of work?
person A, person B, Or all the same
Who is more "powerful"?
Person A or Person B

8- Which two renewable energy sources depend on the weather?(Select all that apply.)
geothermal
biomass
tidal
solar
wind

9- The two common liquids used in liquid-in-glass thermometers arealcohol (ethanol) and mercury, which have melting points andboiling points of -114°C, 79°C and -39°C, 357°C,respectively.
Which one of these thermometers would be better for low temperaturemeasurements?
(alcohol or mercury)
Which one of these thermometers would be better for hightemperature measurements?
(alcohol or mercury)

10-What determines the phase of a substance? (Select all thatapply.)
humidity
temperature
amount of the substance
pressure


11-What is the difference between a longitudinal wave and atransverse wave?

Longitudinal wave: particle displacement is (---) parallelperpendicular to wave velocity.
Transverse wave: particle displacement is ( ------) perpendicularparallel to wave velocity.

Give an example of a longitudinal wave.
(sound wave in air OR
light wave)
Give an example of a transverse wave.
(sound wave in air Or
light wave)

12-Which end (blue or red) of the visible spectrum has the shorterwavelength?
Which has the lower frequency?

13- How long does the image of a 18-in ruler appear in a planemirror?
Does this depend on the distance the ruler is from themirror?
(Yes OR
No)

14-What optical phenomenon causes soap bubbles and oil slicks toshow colorful displays?

15- Which two particles that make up atoms have about the samemass? (Select all that apply.)
protons
electrons
neutrons

16- Which two have the same magnitude of electric charge? (Selectall that apply.)
neutrons
electrons
protons

17- Name one phenomenon that can only be explained by light havinga wave nature.
polarization
photoelectric effect
acceleration
displacement

18- How are frequency and wavelength of an electromagnetic waverelated?
higher the frequency, longer the wavelength
higher the frequency, shorter the wavelength
the frequency and wavelength are not direclty related


19- What other name is often used to refer to the electron cloudmodel of the atom?
plum pudding model
billiard ball model
quantum model
nuclear model
planetary model


20- What are the names of the elements with the followingsymbols?
(a) Ne
(b) Li
(c) He

21- After 4 half-lives have gone by, what fraction of a sample of aradioactive isotope remains? (Write your answer in fractionform.)


22- What are the most common names for these compounds andions?
(a) N2O
(b) HCl
(c) C2H3O2 ?
(d) PO43-

23- What is the formula for the common household compound known astable salt? (Type your answer using the format CO2 for CO2.)

24- What element has the lowest electronegativity?
What element has the second highest electronegativity?


Give the Stock system name for the following.
(a) Cr(OH)2
(b) CuCl2
(c) AuBr3

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