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Light - Reflection and Refraction

Madhya Pradesh Board · Class 10 · Science

Flashcards for Light - Reflection and Refraction — Madhya Pradesh Board Class 10 Science. Quick Q&A cards covering key concepts, definitions, and formulas.

192 questions70 flashcards5 concepts

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A labeled diagram illustrating the two laws of reflection: the angle of incidence equals the angle of reflection (∠i = ∠r), and the incident ray, reflected ray, and normal all lie in the same plane.
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70 Flashcards
Card 1Spherical mirrors

What is the principal focus of a concave mirror?

Answer

The principal focus is the point on the principal axis where rays parallel to the principal axis meet after reflection from a concave mirror.

Card 2गोलाकार दर्पण

अवतल दर्पण का मुख्य फोकस क्या होता है?

Answer

मुख्य फोकस मुख्य अक्ष पर वह बिंदु है जहाँ मुख्य अक्ष के समानांतर किरणें अवतल दर्पण से परावर्तन के बाद मिलती हैं।

Card 3Spherical mirrors

What is the principal focus of a convex mirror?

Answer

It is the point on the principal axis from which rays parallel to the principal axis appear to diverge after reflection.

Card 4गोलाकार दर्पण

उत्तल दर्पण का मुख्य फोकस क्या होता है?

Answer

यह मुख्य अक्ष पर वह बिंदु है जिससे मुख्य अक्ष के समानांतर किरणें परावर्तन के बाद अपसारित होती हुई प्रतीत होती हैं।

Card 5Uses of mirrors

Why is a convex mirror used as a rear-view mirror in vehicles?

Answer

A convex mirror is preferred because it always gives an erect, though diminished, image and has a wider field of view. This helps the driver see a larger area behind the vehicle.

Card 6दर्पणों के उपयोग

वाहनों में पीछे देखने वाले दर्पण के रूप में उत्तल दर्पण का उपयोग क्यों किया जाता है?

Answer

उत्तल दर्पण को इसलिए पसंद किया जाता है क्योंकि यह हमेशा सीधा, यद्यपि छोटा, प्रतिबिंब देता है और देखने का क्षेत्र अधिक चौड़ा होता है। इससे चालक वाहन के पीछे का बड़ा क्षेत्र देख सकता है।

Card 7Mirror formula and signs

A spherical mirror has radius of curvature 20 cm. What is its focal length?

Answer

Use R = 2f. So, f = R/2 = 20 cm / 2 = 10 cm. For a concave mirror, this is taken as negative in sign convention; for a convex mirror, it is positive.

Card 8दर्पण सूत्र और संकेत

एक गोलाकार दर्पण की वक्रता त्रिज्या 20 cm है। उसकी फोकस दूरी क्या है?

Answer

R = 2f का उपयोग करें। अतः, f = R/2 = 20 cm / 2 = 10 cm। अवतल दर्पण के लिए, संकेत परंपरा में इसे ऋणात्मक माना जाता है; उत्तल दर्पण के लिए, यह धनात्मक होता है।

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What are the important topics in Light - Reflection and Refraction for Madhya Pradesh Board Class 10 Science?
Key topics in Light - Reflection and Refraction include Light Reflection and Refraction Concept Map, Light - Reflection and Refraction Concept Map, Light - Reflection and Refraction Concept Map. These are the concepts Madhya Pradesh Board Class 10 examiners draw on most — study them first, then practise related questions.
How to score full marks in Light - Reflection and Refraction — Madhya Pradesh Board Class 10 Science?
Understand the core concepts first, then work through the 192 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
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There are 70 flashcards for Light - Reflection and Refraction covering key definitions, formulas, and concepts. Use them daily for 10–15 minutes for best results.

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