Wedge shaped films & Newton's Rings Experiment

"Fringes of equal thickness" also called as :

• Haidinger's Fringes

• Fizeau Fringes

• FECO Fringes

• Ray Fringes

A wedge shaped film has

• Non uniform thickness

• Zero thickness at one end and it increasing towards other end

• Zero thickness at both ends

• Thickness increases and decreases alternately

If plane mirror is used in place of glass plate in Newton's Ring experiment -

• Multicolour fringes are seen

• Only bright fringes are seen

• No fringes are seen

• Only dark fringes are seen

When Newton's rings interference pattern is viewed from above by means of reflected light , the central spot is -

• Dark

• Bright

• Multicoloured

• None of these

In Newton's ring experiments , the diameter of dark rings is proportional to

• Odd natural number

• Square roots of odd natural numbers

• Even natural number

• Square root of natural number

In Newton's ring experiment , the diameter of bright ring is proportional to

• Odd natural numbers

• Natural numbers

• Square roots of odd natural numbers

• Square roots of natural numbers

In Newton's Ring experiment , rings gradually becomes __________as their radii increases.

Newton's Rings are produced by

• Polarization of light

• Interference of light

• Reflection

• Refraction

Which phenomenon is observed in the following figure -

• Wedge shaped film interference

• Parallel film interference

• Refraction

• Newton's rings

Path difference in case of interference by wedge shaped film depends upon

• Varying thickness of the film

• Source of light

• Varying angle of incidence provided broad source

• Interference