Light emerges out of a convex lens when a source of light kept at its focus. The shape of wavefront of the light is:
Light emerges out of a convex lens when a source of light kept at its focus. The shape of wavefront of the light is:
- [JEE MAIN 2024]
- A
Both spherical and cylindrical
- B
Cylindrical
- C
Spherical
- D
Plane
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Derive the laws of refraction from the concept (Huygen's principle) of the wavefront.
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You have learnt in the text how Huygens’ principle leads to the laws of reflection and refraction. Use the same principle to deduce directly that a point object placed in front of a plane mirror produces a virtual image whose distance from the mirror is equal to the object distance from the mirror.
You have learnt in the text how Huygens’ principle leads to the laws of reflection and refraction. Use the same principle to deduce directly that a point object placed in front of a plane mirror produces a virtual image whose distance from the mirror is equal to the object distance from the mirror.