Which of the following is not a rule about light?

It can pass through opaque objects

It refracts when it passes through objects

The Physics Of Light And Color Quiz! Trivia

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Quizzes Created: 3 | Total Attempts: 8,210

Questions: 10 | Attempts: 2,967 | Updated: Mar 22, 2023

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The Physics Of Light And Color Quiz! Trivia - Quiz

Do you understand anything regarding the physics of light and color? Do you think you can pass this quiz? Light is a complex phenomenon that is totally explained with a simple model based on rays and wavefronts. Color recognition is a function of the human visual system, and it is not an essential property. See how much you know about the physics of light and color by taking this quiz.

Questions and Answers

1.

Which of these are the primary colours?
- A.
  
  Red, Green, Blue
- B.
  
  Blue, White, Red
- C.
  
  Red, Yellow, Blue
- D.
  
  Blue, Orange, Green
Correct Answer
C. Red, Yellow, Blue

Explanation
The primary colors are the three colors that cannot be created by mixing other colors together. They are the fundamental colors that can be combined to create all other colors. In this case, the correct answer is red, yellow, and blue. These three colors are considered primary because they cannot be formed by mixing any other colors together.

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2.

Which of the following is not a rule about light?
- A.
  
  It travels in straight lines
- B.
  
  It can pass through opaque objects
- C.
  
  It refracts when it passes through objects
Correct Answer
B. It can pass through opaque objects

Explanation
The correct answer is "It can pass through opaque objects." This statement is not a rule about light because opaque objects do not allow light to pass through them. Opaque objects block or absorb light, preventing it from passing through and causing the objects to appear solid or non-transparent.

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3.

Look at the diagram below. Which structure helps focus the light on to the retina?
- A.
  
  The iris
- B.
  
  The retina
- C.
  
  The pupil
- D.
  
  The lens
Correct Answer
D. The lens

Explanation
The lens helps focus the light onto the retina. The lens is a transparent structure located behind the iris and the pupil in the eye. It has the ability to change its shape, allowing it to adjust the focus of light onto the retina. This process is known as accommodation and it ensures that the light rays converge onto a single point on the retina, resulting in clear and sharp vision.

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4.

The pupil is made up of coloured muscle.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
The pupil is not made up of colored muscle. The pupil is actually a hole in the center of the iris, which is the colored part of the eye. The iris contains muscles that control the size of the pupil and regulate the amount of light that enters the eye. Therefore, the statement that the pupil is made up of colored muscle is incorrect.

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5.

Light travels in a...
- A.
  
  Zig-zag pattern
- B.
  
  Straight line
- C.
  
  Circular motion
- D.
  
  Curved line
Correct Answer
B. Straight line

Explanation
Light travels in a straight line because it is an electromagnetic wave that propagates in a vacuum or a transparent medium. It follows the principle of rectilinear propagation, where it moves in a straight path from its source until it encounters an obstacle or changes medium. This behavior is explained by the wave nature of light and the fact that it travels at a constant speed in a uniform medium. The straight-line path of light allows for predictable and accurate predictions in optics and the study of light.

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6.

The inventor of an electric light bulb was?
- A.
  
  Thomas Alva Edison
- B.
  
  Albert Einstein
- C.
  
  Ernest Rutherford
- D.
  
  Leonardo Da Vinci
Correct Answer
A. Thomas Alva Edison

Explanation
Thomas Alva Edison is credited with inventing the electric light bulb. He developed and improved upon previous designs, eventually creating a practical and commercially viable version of the light bulb. Edison's invention revolutionized the way people lived and worked, providing a safe and reliable source of artificial light. His contributions to the field of electricity and lighting technology have had a lasting impact on society.

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7.

Which of these objects is transparent?
- A.
  
  Wood
- B.
  
  Frosted glass window
- C.
  
  Car windscreen
- D.
  
  Paper bag
Correct Answer
C. Car windscreen

Explanation
The correct answer is car windscreen. A car windscreen is transparent, meaning that light can pass through it easily, allowing us to see through it clearly. Wood, frosted glass window, and paper bag are not transparent as they either block or scatter light, making it difficult to see through them.

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8.

Which of these objects is translucent?
- A.
  
  Solid wooden door
- B.
  
  Car windscreen
- C.
  
  Frosted glass window
- D.
  
  Brick wall
Correct Answer
C. Frosted glass window

Explanation
A translucent object allows some light to pass through, but scatters it in different directions. A solid wooden door is opaque, meaning it does not allow any light to pass through. A car windscreen is transparent, allowing light to pass through without scattering it. However, a frosted glass window is translucent because it allows some light to pass through, but scatters it due to its textured surface. A brick wall is also opaque, not allowing any light to pass through. Therefore, the correct answer is the frosted glass window.

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9.

Which of these objects are opaque?
- A.
  
  Brick wall
- B.
  
  Car windscreen
- C.
  
  White plastic bag
- D.
  
  Goldfish bowl
Correct Answer
A. Brick wall

Explanation
A brick wall is considered opaque because it does not allow light to pass through it. It is a solid object that blocks the passage of light, making it impossible to see through. Unlike a car windscreen, white plastic bag, or a goldfish bowl, which are transparent or translucent to some extent, a brick wall is completely solid and does not allow any light to pass through it.

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10.

What is the approximate speed of light?
- A.
  
  100 km/h
- B.
  
  10 feet per second
- C.
  
  300,000 kilometres per second
- D.
  
  Really really fast man!
Correct Answer
C. 300,000 kilometres per second

Explanation
The approximate speed of light is 300,000 kilometers per second. This is a well-known scientific fact and is widely accepted. The speed of light is incredibly fast, and it is a fundamental constant in physics. It plays a crucial role in many scientific theories and has been measured and confirmed through various experiments and observations.

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