एक ऊर्ध्वाधर छड़ की लंबाई और उसकी परछाई का अनुपात 2 : √12 है। सूर्य का उन्नयन कोण ज्ञात कीजिए।

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RRB NTPC Graduate Level CBT-I Official Paper (Held On: 05 Jun, 2025 Shift 3)
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  1. 30°
  2. 75°
  3. 45°
  4. 60°

Answer (Detailed Solution Below)

Option 1 : 30°
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Detailed Solution

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दिया गया है:

छड़ की लंबाई : परछाई की लंबाई = 2 : √12

प्रयुक्त सूत्र:

tan θ = छड़ की ऊँचाई ÷ परछाई की लंबाई

गणना:

⇒ tan θ = 2 ÷ √12

⇒ tan θ = 2 ÷ 2√3 = 1 ÷ √3

⇒ θ = 30°

इसलिए, सूर्य का उन्नयन कोण 30° है।

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