Science, asked by Rocking1122, 4 months ago

D. Long answer questions,
1. What is light? How does it help us to see an object?
2. What is a shadow? What are the essential things required to form a shadow of an object?
3. Does the size of the shadow of an object depend upon the size of the object? How does the size
of a shadow vary with the distance between a light source and the object?
4. How did people in earlier times use shadows of objects in the sunlight to measure time?
5. Describe an activity to show that light travels in a straight line.
6. What is the difference between an image and a shadow? Does a pinhole camera produce an image
or a shadow of the object?

Answers

Answered by rubyakumar

Answer:

Image result for what is light

View all

Light or visible light is electromagnetic radiation within the portion of the electromagnetic spectrum that can be perceived by the human eye. Visible light is usually defined as having wavelengths in the range of 400–700 nm, or 4.00 × 10⁻⁷ to 7.00 × 10⁻⁷ m, between the infrared and the ultraviolet.

Previous Question

Next Question