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JEE Main202324 Jan 2023Evening ShiftPhysicsRay OpticsActual

When a beam of white light is allowed to pass through convex lens parallel to principal axis, the different colours of light converge at different point on the principle axis after refraction. This is called :

Options

  1. AScattering
  2. BChromatic aberration
  3. CSpherical aberration
  4. DPolarisation

Correct answer

B. Chromatic aberration

Step-by-step solution

Due to difference in refractive index of a material for different wavelengths, the focal length will be different for different colours. This will cause a separation of parallel beam of white light. This phenomenon is known as chromatic aberration. Polarisation is a property applying to transverse waves that specify the geometrical orientation of the oscillations. When energy waves (such as light, sound, and various electromagnetic waves) are caused to depart from a straight path due to imperfections in the medium

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