2475

Physics Ray Optics Level: High School

Refraction

A ray of red light in material #1 strikes an interface at an angle of 40 degree , and the ray of light enters material #2 at an angle of 50 degrees . As is crossed the interface the ray of light had its speed . Explain your reasoning .

a) Decrease

b) Increase

c) Remain constant

d) Answer depends on the frequency of the light




2245

Physics Ray Optics Level: High School

A convex mirror is used to reflect light from an object placed 60 cm in front of the mirror . The radius of the curvature is R = 88 cm .

a) Find the location of the image .

b) Draw the ray diagram .




2101

Physics Ray Optics Level: High School

If the image height is 10 cm and the objects height is 1 cm , then the magnification is ?

a) 10 times

b) 2 times

c) 100 times

d) 0.1 times

e) None of the above

a) 10 times (m = hi/ho = 10/1 = 10.



2100

Physics Ray Optics Level: High School

You see colors in a rainbow. why ?

a) interference

b) diffraction

c) dispersion

d) refraction

e) polarization

c) dispersion



2099

Physics Ray Optics Level: High School

Light spreads out when it passes through a narrow slit because of ?

a) interference

b) diffraction

c) specular reflection

d) diffuse reflection

e) polarization

b) diffraction



2098

Physics Ray Optics Level: High School

The colors of objects we see by reflected light are due to what ?

a) interference

b) subtractive mixing

c) specular reflection

d) diffuse reflection

e) polarization

d) diffuse reflection



1819

Physics Ray Optics Level: High School

The study of rainbows would fall under what subfield of physics ?

a) Mechanics

b) Thermodynamics

c) Electricity and Magnetism

d) Optics

e) Atomic Physics

Optics



1645

Physics Ray Optics Level: High School

In a thin water film in air , there are exactly 80 wavelengths of blue light inside the film . The reflected light from the two surface of the film will ?

a) Be brightest in the blue part of the spectrum

b) Have the normal amount of blue light

c) None of the options

d) Be deficient in blue light

Be brightest in the blue part of the spectrum



1634

Physics Ray Optics Level: High School

Reflections

The radius of curvature of a spherical mirror is 32 cm . Rays parallel to the axis of the mirror will be brought into focus at a point that is what distance from the mirror ?

a) 8.0 cm

b) 4.0 cm

c) 32 cm

d) 16 cm

V = R/2 = 32/2= 16 cm



1630

Physics Ray Optics Level: High School

A beam of light falls from air onto a slab of transparent plastic at an angle of incidence of 45degrees C . The angle of refraction of the refracted ray in the plastic is 30 degrees C . What is the refractive index of the plastic

a) 1

b) ½

c) Square root 2

d) 2




1629

Physics Ray Optics Level: High School

A beam of light falls from air onto a slab of transparent plastic at an angle of incidence of 45degrees C . The angle of refraction of the refracted ray in the plastic is 30 degrees C . What is the refractive index of the plastic

a) 1

b) ½

c) Square root 2

d) 2




1619

Physics Ray Optics Level: High School

Completely polarized light passed through a polarizing sheet . The light that passes through has an intensity of 50% of the incident beam . The angle between the direction of polarization of the incident beam and the direction of polarization of the sheet must be .

a) 30 degree

b) 45degree

c) 90 degree

d) 60 degree




1556

Physics Ray Optics Level: High School

Superposition Principle

Two waves with identical frequency but different amplitudes A1 = 6.0 cm and A2 = 3.0 cm , occupy the same region of space (are superimposed ) .

a) At what phase difference does the resulting wave have the largest amplitude ? What is the amplitude of the resulting wave in that case ?

b) At what phase difference does the resulting wave have the smallest amplitude and what is its amplitude ?




1555

Physics Ray Optics Level: High School

Light of wavelength 0.512 micro m (in air ) enters the water in a swimming pool . The speed of light in water is 0.730 times the speed in air . What is the wavelength of the light in water ?



1401

Physics Ray Optics Level: High School

Consider two slabs of material with the same thickness , but made of materials differing in their index of refraction . Which of the following are true ?
The speed of light will differ in the two slabs

Displaying 196-210 of 295 results.