Class 7 light
Light and Color – Grade 7 MCQs
1. What is the speed of light in a vacuum?
300,000 km/s150,000 km/s
100,000 km/s
450,000 km/s
2. Which of the following is not a property of light?
ReflectionRefraction
Diffusion
Absorption
3. Which color of light has the shortest wavelength?
RedBlue
Green
Violet
4. What happens to light when it passes through a prism?
It reflectsIt refracts and disperses
It absorbs
It diffuses
5. Which device is used to split light into its component colors?
MirrorLens
Prism
Spectrometer
6. What colors make up white light?
Only red, green, and blueAll colors of the visible spectrum
Only red and blue
Only yellow, red, and green
7. What is the primary color that absorbs all light colors except its own?
BlueRed
Green
Black
8. What color do you get when you mix red and blue light?
GreenYellow
Magenta
Cyan
9. Why does a red apple appear red?
It absorbs red light and reflects other colorsIt reflects red light and absorbs other colors
It emits red light
It refracts red light
10. What happens when white light passes through a blue filter?
All colors are absorbedOnly blue light passes through
All colors pass through
Only red light passes through
Post Comment