Wave Optics - SS1 Physics Past Questions and Answers - page 1
Interference of light waves occurs when:
Light waves pass through a medium
Light waves reflect off a surface
Light waves superpose and overlap
Light waves scatter in all directions
In constructive interference of light waves:
The waves cancel each other out
The waves reinforce each other
The waves change direction
The waves scatter in random directions
In destructive interference of light waves:
The waves cancel each other out
The waves reinforce each other
The waves change direction
The waves scatter in random directions
Interference of light waves can result in the formation of:
Shadows
Reflection
Diffraction
Interference patterns
The phenomenon of interference is a result of:
Reflection of light waves
Refraction of light waves
Superposition of light waves
Scattering of light waves
Interference of light waves is a characteristic property of:
Transverse waves
Longitudinal waves
Electromagnetic waves
Mechanical waves
The colours observed in thin film interference are due to:
Absorption of light
Reflection of light
Refraction of light
Dispersion of light
The phenomenon of interference is commonly observed in:
Sound waves
Water waves
Light waves
All of the above
Interference fringes are formed when light waves:
Interact with a single slit
Interact with a double slit
Pass through a convex lens
Pass through a polarizer
Explain the phenomenon of interference of light waves. How does it occur and what are its characteristics?
Interference of light waves is the superposition of two or more light waves, resulting in the formation of regions of constructive and destructive interference. It occurs when light waves from different sources or from the same source with different paths interfere with each other. Interference is a result of the wave nature of light, where the crests and troughs of the waves either reinforce or cancel each other out.
The characteristics of interference include the formation of interference patterns, where bright and dark regions are observed. Constructive interference occurs when the crests of two waves coincide, resulting in the reinforcement of the waves and the formation of bright regions. Destructive interference occurs when the crest of one wave coincides with the trough of another wave, resulting in the cancellation of the waves and the formation of dark regions.