Three experiments involving a thin film (in air)are shown.If t denotes the film thickness and $\lambda$ denotes the wavelength of the light in the film, which experiments will produce constructive interference as seen by the observer?
A)I only
B)II only
C)III only
D)I and III only
E)II and III only

Question

Three experiments involving a thin film (in air)are shown.If t denotes the film thickness and $\lambda$ denotes the wavelength of the light in the film, which experiments will produce constructive interference as seen by the observer? 
A)I only 
B)II only 
C)III only 
D)I and III only 
E)II and III only

Quizplus · Accepted Answer

The Answer of Three experiments involving a thin film (in air)are shown.If t denotes the film thickness and $\lambda$ denotes the wavelength of the light in the film, which experiments will produce constructive interference as seen by the observer? 
A)I only 
B)II only 
C)III only 
D)I and III only 
E)II and III only

Three Experiments Involving a Thin Film (In Air)are Shown λ\lambdaλ Denotes the Wavelength of the Light in the Film, Which

Three Experiments Involving a Thin Film (In Air)are Shown $\lambda$ Denotes the Wavelength of the Light in the Film, Which