Question

1.
2.
3.
4.
Answer (Detailed Solution Below)

Option 4 : $20$ / $20$

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Detailed Solution

सही उत्तर $20$ / $20$ है।

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Question:

An astronomical telescope has an objective of focal length $100\ \text{cm}$ and an eyepiece of focal length $5\ \text{cm}$. In normal adjustment, its angular magnification is / एक खगोलीय दूरबीन के अभिदृश्यक की फोकस दूरी $100\ \text{cm}$ तथा नेत्रिका की $5\ \text{cm}$ है। सामान्य समायोजन में इसका कोणीय आवर्धन है

1.
$500$ / $500$
2.
$5$ / $5$
3.
$105$ / $105$
4.
$20$ / $20$

Correct Answer: $20$ / $20$

In normal adjustment, $M = f_o/f_e = 100/5 = 20$. / सामान्य समायोजन में $M = f_o/f_e = 100/5 = 20$।

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