Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
2 reads1 ratings1 helpful

What is the SI unit of power of a lens?

Answer and explanation

Correct answer: Dioptre

The unit of power of a lens is dioptre (D). Since \(P = \frac{1}{f}\), where \(f\) is the focal length in metres, a lens with focal length 1 m has power 1 dioptre. Metre is the unit of focal length, not lens power. Exam tip: convert focal length into metres before using \(P = 1/f\).

Related tags

Power Of LensDioptreFocal LengthHuman EyeClass 10 ScienceLensesLight Reflection And RefractionScience

Was this question useful?

5.0/ 51 ratings

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.