Question

When I shine a particular laser pointer into a simple single-slit apparatus, I find that there's a bright spot 4cm above the central bright spot on the screen.  Which of the following changes would cause that bright spot to move up on the screen (toward the central bright spot)? Select all that apply.

Group of answer choices

Increase the wavelength of the light.

Increase the width of the slit.

Increase the power of the laser pointer.

Increase the distance between the slit and the screen.

Answer 1

Answer: # Increase the width of the slit

# Increase the power of the laser pointer

Distqncw of bright spot from central bright spot is ,

Where L = distance of screen from slit

d= width of slit

As increases decreases

# As the power increases the intensity also increases which means the particles are closely spaced ( particles come near).So particles of bright spot move towards central bright spot.