उस क्षेत्र को क्या कहा जाता है जहाँ किसी स्रोत से आने वाला सारा प्रकाश अवरोधित हो जाता है?

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NTPC CBT-I (Held On: 13 Jan 2021 Shift 1)
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  1. पूर्वछाया (अंतुम्ब्रा)
  2. परछाई
  3. प्रतिछाया
  4. उपच्छाया

Answer (Detailed Solution Below)

Option 3 : प्रतिछाया
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RRB NTPC CBT-I Official Paper (Held On: 4 Jan 2021 Shift 1)
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Detailed Solution

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सही उत्तर प्रतिछाया है।  Key Points

  • प्रतिछाया (अम्ब्रा): पूर्ण छाया के क्षेत्र को प्रतिछाया कहा जाता है।
  • सूर्य या चंद्र ग्रहण में पृथ्वी की छाया के क्षेत्र को तीन भागों में बांटा गया है। तीन भाग निम्न हैं:
    • उपच्छाया: विसरित परछाई के क्षेत्र को उपच्छाया कहा जाता है।
    • अंतुम्ब्रा: अंतुम्ब्रा परछाई का हल्का हिस्सा होता है जो परछाई डालने वाली वस्तु से एक निश्चित दूरी पर बनता है।
    • प्रतिछाया: पूर्ण परछाई के क्षेत्र को प्रतिछाया कहा जाता है।

Additional Information

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