Optics and Electromagnetic Spectrum Quiz

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Why does a very thin film appear transparent?

It absorbs all visible light
It transmits all visible light
It reflects no visible light (correct)
It reflects all visible light

What causes the colors seen on an oil slick?

Refraction of light
Reflection and interference (correct)
Absorption of light
Diffraction of light

Why does Aristotle believe that the Earth is spherical?

Because of the Earth's rotation
Because of the curved shadow of the Earth during an eclipse (correct)
Because of the Earth's magnetic field
Because of the Earth's gravitational field

What is the reason for wearing sunglasses at the beach during summer days?

To reduce glare from reflected surfaces (D) Signup and view all the answers

What is the result of shining a beam of white light through a thick glass plate at an angle?

All colors emerge at the same time (D) Signup and view all the answers

What is the reason why the wavelike nature of a moving baseball is not noticed in everyday life?

Its wavelength is too small (D) Signup and view all the answers

What occurs when the angle of incidence is greater than a certain angle?

Total reflection occurs (A) Signup and view all the answers

What is required to produce a hologram of an object, in addition to the object and photographic film?

A beam of coherent light and a mirror (B) Signup and view all the answers

Which of the following statements is true about the two beams of light?

The red beam has a higher number of photons per second (B) Signup and view all the answers

What is the process by which many living creatures produce light?

Bioluminescence (D) Signup and view all the answers

What happens to the energy per photon if the wavelengths of emitted light increase?

The energy per photon decreases (D) Signup and view all the answers

What is the characteristic of two coherent light sources?

They have the same frequency and maintain a constant phase difference (A) Signup and view all the answers

What is the force required to sustain the motion of a rocket moving in a straight line with constant speed in empty space?

Zero (B) Signup and view all the answers

If you leap straight up inside a high-speed train while it gains speed, where will you land relative to your original position?

Slightly behind your original position (A) Signup and view all the answers

What is the characteristic of a virtual image?

It can be focused on the retina (A) Signup and view all the answers

What is the size of the image produced by a plane mirror compared to the object?

The same size (D) Signup and view all the answers

What happens to the light transmitted in an optical fiber?

It is transmitted through the fiber with total internal reflection (B) Signup and view all the answers

What is the relationship between the speed of light in a vacuum and in diamond?

The speed of light is 2.42 times slower in diamond than in a vacuum (B) Signup and view all the answers