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Optics
The wavelenth of the electromagnetic wave used for AM broadcasting is 110 m.
calculate the frequency of the wave
calculate the frequency of the wave
Optics
A light of amplitude ‘a’ is incident obliquely on a parallel thin film. If ‘r’ and ‘t’
represent the fractions of incident light reflected and transmitted respectively, draw a
diagram to explain multiple reflection of incident light and write the amplitudes of
successive rays.
represent the fractions of incident light reflected and transmitted respectively, draw a
diagram to explain multiple reflection of incident light and write the amplitudes of
successive rays.
Optics
A light of amplitude ‘a’ is incident obliquely on a parallel thin film. If ‘r’ and ‘t’
represent the fractions of incident light reflected and transmitted respectively, draw a
diagram to explain multiple reflection of incident light and write the amplitudes of
successive rays.
represent the fractions of incident light reflected and transmitted respectively, draw a
diagram to explain multiple reflection of incident light and write the amplitudes of
successive rays.
Optics
What is a zone plate? How does a positive zone plate differ from a negative zone
plate? Show that each Fresnel half period zone has nearly the same area.
plate? Show that each Fresnel half period zone has nearly the same area.
Optics
A light of amplitude ‘a’ is incident obliquely on a parallel thin film. If ‘r’ and ‘t’
represent the fractions of incident light reflected and transmitted respectively, draw a
diagram to explain multiple reflection of incident light and write the amplitudes of
successive rays.
represent the fractions of incident light reflected and transmitted respectively, draw a
diagram to explain multiple reflection of incident light and write the amplitudes of
successive rays.
Optics
Obtain the conditions for observing maxima and minima in a Young two-slit
interference pattern. Show that these conditions change when a thin transparent
sheet of thickness t and refractive index µ is introduced in the path of one of the
superposing beams.
interference pattern. Show that these conditions change when a thin transparent
sheet of thickness t and refractive index µ is introduced in the path of one of the
superposing beams.
Optics
Compare and contrast three level and four level pumping schemes.
Optics
Derive an expression to show that the condition of population inversion is necessary
for laser action.
for laser action.
Optics
What is a zone plate? How does a positive zone plate differ from a negative zone
plate? Show that each Fresnel half period zone has nearly the same area.
plate? Show that each Fresnel half period zone has nearly the same area.
Optics
Derive an expression to show that the condition of population inversion is necessary
for laser action.
for laser action.
