Question

Statement given below is incorrect. Write the correct statement:

When light entering a dark room from a window, the linear movement of dust particles is seen.

Answer 1

• Explanation for the correct statement:
• When a beam of sunlight enters a dark room through a window, then its path becomes visible to us.
• The tiny dust particles present in the air of the room appear scattered by the beam of light all around the room.
• This zig-zag motion of the particles is known as the Brownian movement.
• Therefore, the correct statement is- When light entering a dark room from a window, the zig-zag movement of dust particles is seen.