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population unchanged MCQ Questions for Class 12

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Question 1/2 Expert Geography The World Population – Distribution, Density and Growth Population Density Class 12 Level 19

यदि किसी region की density original की 125 प्रतिशत हो गई है और area original की 80 प्रतिशत रह गई है, तो population original की कितने प्रतिशत है?

If a region's density becomes 125 percent of the original while area becomes 80 percent of the original, what percentage of the original population remains?

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Correct Answer

C. 100 प्रतिशत100 percent

Explanation

Simple Explanation

Population \(=Density \times Area\)। इसलिए population multiplier \(1.25 \times 0.80 = 1.00\) है। इसका अर्थ population unchanged है, अर्थात original की 100 percent। तीसरा विकल्प सही है। Density increase और area decrease एक-दूसरे को exactly offset कर रहे हैं। / Population equals density multiplied by area. Therefore, the population multiplier is \(1.25 \times 0.80 = 1.00\). This means population remains unchanged at 100 percent of the original. The third option is correct. The density increase and area decrease exactly offset one another.

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Question 2/2 Hard Geography The World Population – Distribution, Density and Growth Population Density Class 12 Level 20

यदि किसी region की density 20 प्रतिशत घटती है और area 25 प्रतिशत बढ़ता है, तो population में क्या परिवर्तन हुआ होगा?

If a region's density decreases by 20 percent and its area increases by 25 percent, what change must have occurred in population?

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Correct Answer

A. Population unchanged रहीPopulation remained unchanged

Explanation

Simple Explanation

Population \(P = D \times A\) है। Density multiplier 0.8 और area multiplier 1.25 है। इसलिए population multiplier \(0.8 \times 1.25 = 1.0\) है। अर्थात population unchanged रही। इसलिए पहला विकल्प सही है। यह question दिखाता है कि density decline जरूरी नहीं कि population decline को दर्शाए; area expansion भी density कम कर सकती है। / Population is \(P = D \times A\). The density multiplier is 0.8 and the area multiplier is 1.25. Their product is \(0.8 \times 1.25 = 1.0\), so population remained unchanged. Therefore, the first option is correct. This question shows that a decline in density does not necessarily mean population decline; expansion of area can also lower density.

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population unchanged MCQ Questions for Class 12

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यदि किसी region की density original की 125 प्रतिशत हो गई है और area original की 80 प्रतिशत रह गई है, तो population original की कितने प्रतिशत है?

Simple Explanation

यदि किसी region की density 20 प्रतिशत घटती है और area 25 प्रतिशत बढ़ता है, तो population में क्या परिवर्तन हुआ होगा?

Simple Explanation

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population unchanged MCQ Questions for Class 12

Practice Questions

यदि किसी region की density original की 125 प्रतिशत हो गई है और area original की 80 प्रतिशत रह गई है, तो population original की कितने प्रतिशत है?

Simple Explanation

यदि किसी region की density 20 प्रतिशत घटती है और area 25 प्रतिशत बढ़ता है, तो population में क्या परिवर्तन हुआ होगा?

Simple Explanation

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