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population multiplier 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 21

यदि density original की 125 प्रतिशत और area original की 96 प्रतिशत हो जाए, तो population original की कितने प्रतिशत होगी?

If density becomes 125 percent of the original and area becomes 96 percent of the original, what percentage of the original population will remain?

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Correct Answer

C. 120 प्रतिशत120 percent

Explanation

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Population \(=Density\times Area\)। इसलिए population multiplier \(1.25\times0.96=1.20\) है। Population original की 120 percent होगी, अर्थात 20 percent increase। इसलिए तीसरा विकल्प सही है। Density increase और area decrease दोनों को combine करना जरूरी है; केवल density change देखकर population change नहीं निकाला जा सकता। / Population equals density multiplied by area. Therefore, the population multiplier is \(1.25\times0.96=1.20\). Population becomes 120 percent of the original, an increase of 20 percent. The third option is correct. Both density and area changes must be combined; population change cannot be inferred from density alone.

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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 population 30 प्रतिशत बढ़ती है और density केवल 10 प्रतिशत बढ़ती है, तो area में लगभग कितना परिवर्तन हुआ है?

If a region's population increases by 30 percent while density increases by only 10 percent, approximately how much has area changed?

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Correct Answer

A. लगभग 18.2 प्रतिशत बढ़ाIncreased by about 18.2 percent

Explanation

Simple Explanation

क्योंकि \(D=P/A\), इसलिए \(A=P/D\)। New area multiplier \(\frac{1.3}{1.1}=1.1818...\) है। इसका अर्थ area लगभग 18.2 percent बढ़ा। इसलिए पहला विकल्प सही है। Population growth density growth से तेज है, इसलिए area भी expand हुआ होगा। परीक्षा में area change निकालने के लिए population multiplier को density multiplier से divide करें। / Since \(D=P/A\), area is \(A=P/D\). The new area multiplier is \(\frac{1.3}{1.1}=1.1818...\), meaning area increased by about 18.2 percent. Therefore, the first option is correct. Population grows faster than density, so area must also have expanded. To find area change, divide the population multiplier by the density multiplier.

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population multiplier MCQ Questions for Class 12

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यदि density original की 125 प्रतिशत और area original की 96 प्रतिशत हो जाए, तो population original की कितने प्रतिशत होगी?

Simple Explanation

यदि किसी region की population 30 प्रतिशत बढ़ती है और density केवल 10 प्रतिशत बढ़ती है, तो area में लगभग कितना परिवर्तन हुआ है?

Simple Explanation

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population multiplier MCQ Questions for Class 12

Practice Questions

यदि density original की 125 प्रतिशत और area original की 96 प्रतिशत हो जाए, तो population original की कितने प्रतिशत होगी?

Simple Explanation

यदि किसी region की population 30 प्रतिशत बढ़ती है और density केवल 10 प्रतिशत बढ़ती है, तो area में लगभग कितना परिवर्तन हुआ है?

Simple Explanation

population multiplier Revision Links

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