Transverse waves: polarised (one plane) and unpolarised (random planes)अनुप्रस्थ तरंगें: ध्रुवित (एक तल) और अध्रुवित (यादृच्छिक तल)Transverse waves: polarised (one plane) and unpolarised (random planes)
NCERT Fig 10.17 · 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
- Wave on a string (डोरी पर तरंग) — y(x, t) = a sin(kx − ωt): the string stays in the x-y plane — a plane (linearly) polarised wave. Dashed: a moment Δt later.
- Displacement (along y) (विस्थापन (y के अनुदिश)) — Perpendicular to the direction of travel (x): a transverse wave.
- Direction of travel (+x) (संचरण दिशा (+x)) — The wave moves along +x.
- Unpolarised light (end-on view) (अध्रुवित प्रकाश (सामने से)) — The plane of vibration of E changes randomly and very fast, but E always stays perpendicular to the beam. E.g. sunlight, a bulb, a sodium lamp.
- Linearly polarised light (रैखिकतः ध्रुवित प्रकाश) — E oscillates along one fixed line (double arrow).
- Slot analogy (खाँचे की उपमा) — A vertical slot lets vertical string vibrations through and stops horizontal ones — only transverse waves can be polarised like this.
Original diagram drawn by Simple Learning Hub, based on NCERT Fig 10.17. Report a mistake