Wavefronts: spherical (near a point source) and plane (far away)तरंगाग्र: गोलीय (बिंदु स्रोत के पास) और समतल (बहुत दूर)Wavefronts: spherical (near a point source) and plane (far away)
NCERT Fig 10.1 · Class 12 Physics · Chapter 10 · interactive diagram
Read Chapter 10 with this diagramइस डायग्राम के साथ अध्याय 10 पढ़ेंIs diagram ke saath Ch 10 padhiyeAll Physics diagramsसभी भौतिकी डायग्रामSaare Physics diagrams
Parts and what they mean
- Point source (बिंदु स्रोत) — Sends waves equally in all directions.
- Spherical wavefront (गोलीय तरंगाग्र) — All points on a sphere around the source are at the same distance, so they oscillate in phase — a surface of constant phase.
- Rays (radial) (किरणें (त्रिज्य)) — Energy travels perpendicular to the wavefront, so rays point straight out from the source.
- Plane wavefront (समतल तरंगाग्र) — Far from the source a small part of a huge sphere is practically flat — e.g. light from the Sun or a distant star.
- Parallel rays (समांतर किरणें) — For a plane wavefront all rays are parallel (and perpendicular to the wavefront).
Original diagram drawn by Simple Learning Hub, based on NCERT Fig 10.1. Report a mistake