Intereference

Question 1

W1=W2

Answer 1

In phase, bright, traveling same distance

Question 2

W1 does not = W2=mlambda

Answer 2

Bright, in phase, one travels longer distance, path difference

Question 3

W1 does not = W2=(m+1/2)lambda

Answer 3

Dark, out of phase 180, difference is not one whole wavelength

Question 4

Condition for bright fringes (constructive interference)

Answer 4

dsin(theta)=m(lambda)

Question 5

The condition for dark fringes (destructive interference)

Answer 5

dsin(theta)=(m+1/2)(lambda)

Question 6

Condition for interference

Answer 6

Monochromatic light and mutual coherence

Question 7

Interference obeys laws of

Answer 7

Conservation of energy

Question 8

Borrower the slit distance, the greater

Answer 8

The angle

Question 9

For a fixed wavelength, the fringes are wider when…

Answer 9

The slits are closer together (small d)

Question 10

Thor a fixed wavelength, the fringes are narrow or finer when

Answer 10

The slits are farther apart (large d)

Question 11

For a fixed slit separation (fixed d), the fringes are wider for…

Answer 11

Longer wavelength

Question 12

____fringes are spread out farther than _____ fringes

Answer 12

Red

Blue

Question 13

Fringes for white light illumination

Answer 13

Interference fringes are colored

Question 14

The fringe width (y) decreases as ______gets reduced

Answer 14

Wavelength