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Sequencing
High 10
Physics

9.3 - Interference of transmitted light through Double Slits

MUHAMMAD NAIM

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# 1Multiple Choice

In Young’s double-slit experiment, bright fringes are formed due to...

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Diffraction of light at the edges of the slit
Reflection of light from the screen
Constructive interference of light waves
Destructive interference of light waves
# 2Multiple Choice

Dark fringes are produced when...

Two crests overlap
A crest and a trough overlap
Two troughs overlap
The path difference is zero
# 3Multiple Choice

The condition for bright fringes (maxima) is...

Path difference = mλ
Path difference = (m + ½)λ
Path difference = λ/4
Path difference = zero only
# 4Multiple Choice

The condition for dark fringes (minima) is...

Path difference = mλ
Path difference = (m + ½)λ
Phase difference = 2πm
Path difference = λ
# 5Multiple Choice

What does the variable d represent in the equation

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Distance between slit and screen
Distance between the two slits
Wavelength of light
Distance between two fringes
# 6Multiple Choice

If the slit separation d is decreased, the fringe separation (Δy) will...

Increase
Decrease
Become zero
Remain the same
# 7Multiple Choice

If a light source with longer wavelength is used, the fringes will...

Be further apart
Be closer together
Disappear
Move toward the center
# 8Multiple Choice

The central bright fringe appears because...

The path difference between the two slits is zero
The phase difference is π
Light waves from both slits cancel each other
One slit is brighter than the other
# 9Multiple Choice

The separation between two consecutive bright fringes is given by...

Δy = (mλD)/d
Δy = (λD)/d
Δy = D/(mλ)
Δy = λd/D
# 10Multiple Choice

If the screen is moved farther from the slits (increase D), the fringe separation will...

Increase
Decrease
Stay constant
Disappear
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