GCSE Physics - Visible Light and Colour #71

The video tutorial explains why objects appear in different colors, focusing on the visible light spectrum, which ranges from red to violet. It discusses how the color of an object is determined by the wavelengths of light it reflects, absorbs, or transmits. Opaque objects reflect certain wavelengths, while transparent and translucent objects allow light to pass through. The tutorial also covers color filters, which selectively transmit certain wavelengths, affecting how we perceive colors through them.

What is the order of colors in the visible light spectrum from longest to shortest wavelength?

• Blue, Green, Yellow, Orange, Red, Indigo, Violet

• Violet, Indigo, Blue, Green, Yellow, Orange, Red

• Red, Orange, Yellow, Green, Blue, Indigo, Violet

• Green, Yellow, Orange, Red, Violet, Indigo, Blue

Why do opaque objects appear a certain color?

• They transmit all wavelengths of light.

• They reflect all wavelengths of light.

• They reflect certain wavelengths and absorb others.

• They absorb all wavelengths of light.

How do transparent objects interact with light?

• They absorb most of the light.

• They transmit most of the light.

• They block all light.

• They reflect most of the light.

What determines the color of a translucent object?

• The wavelengths it absorbs the most.

• The wavelengths it reflects the most.

• The wavelengths it transmits the most.

• The wavelengths it blocks the most.

What is the function of a primary color filter?

• To transmit all colors equally.

• To block all colors except one primary color.

• To reflect all colors except one primary color.

• To absorb all colors except one primary color.

What happens when white light passes through a green filter?

• No light is transmitted.

• Only red wavelengths are transmitted.

• All colors are transmitted.

• Only green wavelengths are transmitted.

How do non-primary color filters like yellow work?

• They only let through yellow light.

• They let through yellow and its primary components.

• They block all light except yellow.

• They reflect yellow light.