Mechanical Properties of Solids
Madhya Pradesh Board · Class 11 · Physics
Flashcards for Mechanical Properties of Solids — Madhya Pradesh Board Class 11 Physics. Quick Q&A cards covering key concepts, definitions, and formulas.
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तनाव की परिभाषा और इसकी SI इकाई बताइए।
Answer
तनाव वह प्रति इकाई क्षेत्रफल पुनर्स्थापी बल है जो किसी पिंड में बाहरी बल से विकृत होने पर उत्पन्न होता है। सूत्र: stress = F/A. SI इकाई: N/m^2 या pascal (Pa). विमीय सूत्र: [ML^-1T^-2].
State the definition of stress and its SI unit.
Answer
Stress is the restoring force per unit area developed in a body when it is deformed by an external force. Formula: stress = F/A. SI unit: N/m^2 or pascal (Pa). Dimensional formula: [ML^-1T^-2].
State the definition of strain and why it has no unit.
Answer
Strain is the fractional change in dimension of a body under stress. For length change, longitudinal strain = ΔL/L. Since it is a ratio of two lengths, it has no units and no dimensional formula.
विकृति की परिभाषा बताइए और इसका कोई इकाई क्यों नहीं होती।
Answer
विकृति तनाव के अधीन किसी पिंड के आयाम में होने वाला भिन्नात्मक परिवर्तन है। लंबाई परिवर्तन के लिए, अनुदैर्ध्य विकृति = ΔL/L. क्योंकि यह दो लंबाइयों का अनुपात है, इसकी कोई इकाई और कोई विमीय सूत्र नहीं …
500 N का बल 0.25 m^2 के क्षेत्रफल पर लम्बवत्作用 करता है। तनाव ज्ञात कीजिए।
Answer
दिया है: F = 500 N, A = 0.25 m^2. सूत्र: stress = F/A. चरण 1: stress = 500 N / 0.25 m^2. चरण 2: stress = 2000 N m^-2. उत्तर: 2.0 × 10^3 Pa.
A force of 500 N acts normally on an area of 0.25 m^2. Find the stress.
Answer
Given: F = 500 N, A = 0.25 m^2. Formula: stress = F/A. Step 1: stress = 500 N / 0.25 m^2. Step 2: stress = 2000 N m^-2. Answer: 2.0 × 10^3 Pa.
A wire of original length 2.0 m extends by 1.0 mm. Find the longitudinal strain.
Answer
Given: L = 2.0 m, ΔL = 1.0 mm = 1.0 × 10^-3 m. Formula: longitudinal strain = ΔL/L. Step 1: strain = (1.0 × 10^-3 m)/(2.0 m). Step 2: strain = 5.0 × 10^-4. Answer: 5.0 × 10^-4, no unit.
2.0 m लंबाई वाली एक तार 1.0 mm बढ़ती है। अनुदैर्ध्य विकृति ज्ञात कीजिए।
Answer
दिया है: L = 2.0 m, ΔL = 1.0 mm = 1.0 × 10^-3 m. सूत्र: longitudinal strain = ΔL/L. चरण 1: strain = (1.0 × 10^-3 m)/(2.0 m). चरण 2: strain = 5.0 × 10^-4. उत्तर: 5.0 × 10^-4, कोई इकाई नहीं।…
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