Multiple choice

A pinhole camera is a very simple device based on the principle of

  1. reflection of light

  2. refraction of light

  3. rectilinear propagation of light

  4. scattering of light

  5. None of these

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct option. A pinhole camera is a very simple device based on the principle of rectilinear propagation of light. It states that light travels in straight lines.