Electromagnetic waves

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Question 16
Medium

The diagram shows how a lens forms an image of an object. The grid has major grid lines every 1.0 cm and minor grid lines every 0.1 cm.

A ray diagram on a grid showing a lens, focal points, an object, and its virtual image.

a.

What type of lens is represented in the diagram?

  • Concave
  • Convex
  • Converging
[1]
b.

Using the grid, find the image height and the object height.

  • Image height = _____ cm\text{cm}cm
  • Object height = _____ cm\text{cm}cm
[2]
c.

Calculate the magnification produced by the lens using the formula: magnification=image heightobject height\text{magnification} = \frac{\text{image height}}{\text{object height}}magnification=object heightimage height​

[2]
d.

Which two words describe the image?

  • Diminished
  • Inverted
  • Real
  • Upright
  • Virtual
[2]
e.

The object was blue. A student looked at the blue object through a red filter. Complete the sentences choosing from: black, blue, green, red, white.

  • Looking at the blue object through a red filter makes the object appear ________.
  • This is because the red filter only transmits the light that is ________.
[2]

Electromagnetic waves Questions

  1. GCSE
  2. /Physics
  3. /Electromagnetic waves