Optics - Wave Optics - SS2 Physics Past Questions and Answers - page 4
What is polarisation of light?
The bending of light waves as they pass through a medium
The spreading out of light waves as they encounter an obstacle
The alignment of light waves in a specific direction
The reflection of light waves off a smooth surface
Which type of light waves are polarised?
Longitudinal waves
Transverse waves
Mechanical waves
Sound waves
What is the cause of polarisation of light?
Refraction
Reflection
Absorption
Scattering
Which type of polarised sunglasses are most effective in reducing glare?
Linear polarisers
Circular polarisers
Elliptical polarisers
Non Polarised sunglasses
How does a polarising filter work?
It absorbs all light waves except those aligned in a specific direction.
It reflects all light waves except those aligned in a specific direction.
It refracts all light waves except those aligned in a specific direction.
It scatters all light waves except those aligned in a specific direction.
Which of the following phenomena does polarisation of light help explain?
Interference
Diffraction
Doppler effect
Malus' law
Which of the following materials can polarise light waves?
Metals
Gases
Liquids
Dielectrics
Which of the following statements about polarised light is true?
Polarised light has a specific wavelength.
Polarised light can pass through polarised filters.
Polarised light has a specific frequency.
Polarised light is always monochromatic.
How does the orientation of the polarising filter affect the intensity of transmitted light?
The intensity increases when the filter is parallel to the polarisation direction.
The intensity decreases when the filter is parallel to the polarisation direction.
The intensity increases when the filter is perpendicular to the polarisation direction.
The intensity remains constant regardless of the filter orientation.
Which of the following natural phenomena involves the polarisation of light?
Rainbow formation
Mirages
Total internal reflection
Scattering