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area doubles MCQ Questions for Class 12

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Question 1/4 Medium Geography The World Population – Distribution, Density and Growth Population Density Class 12 Level 21

यदि किसी region में density 200 व्यक्ति प्रति वर्ग किलोमीटर है और area double हो जाए जबकि population 50 प्रतिशत बढ़े, तो new density कितनी होगी?

If a region has a density of 200 persons per square kilometre and area doubles while population increases by 50 percent, what is the new density?

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Correct Answer

B. 150 व्यक्ति प्रति वर्ग किलोमीटर150 persons per square kilometre

Explanation

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New density multiplier \(\frac{1.5}{2} = 0.75\) है। इसलिए new density \(200 \times 0.75 = 150\) persons per square kilometre होगी। दूसरा विकल्प सही है। Population बढ़ी है, लेकिन area उससे अधिक proportion में बढ़ा है, इसलिए density घटती है। / The new density multiplier is \(\frac{1.5}{2} = 0.75\). Therefore, the new density is \(200 \times 0.75 = 150\) persons per square kilometre. The second option is correct. Population increases, but area grows by a larger proportion, so density falls.

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Question 2/4 Easy Geography The World Population – Distribution, Density and Growth Population Density Class 12 Level 20

यदि population आधी हो और area double हो जाए, तो density क्या होगी?

If population becomes half and area doubles, what happens to density?

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Correct Answer

D. density original की एक-चौथाई होगीDensity will become one-fourth of the original

Explanation

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New density \(\frac{Population/2}{2Area}\) होगी, जो \(\frac{1}{4} \times \frac{Population}{Area}\) के बराबर है। इसलिए density original value की one-fourth हो जाती है और चौथा विकल्प सही है। Population decrease और area increase दोनों density को कम करते हैं। परीक्षा में numerator decrease और denominator increase के combined effect को ध्यान से समझें। / The new density is \(\frac{Population/2}{2Area}\), which equals \(\frac{1}{4} \times \frac{Population}{Area}\). Therefore, density becomes one-fourth of the original value and the fourth option is correct. A decrease in population and an increase in area both reduce density. In examinations, carefully consider the combined effect of a smaller numerator and a larger denominator.

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Question 3/4 Easy Geography The World Population – Distribution, Density and Growth Population Density Class 12 Level 20

यदि area double हो जाए लेकिन population unchanged रहे, तो density क्या होगी?

If area doubles while population remains unchanged, what happens to density?

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Correct Answer

A. density आधी हो जाएगीDensity will become half

Explanation

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Density \(Population/Area\) ratio है। यदि population same रहे और denominator यानी area double हो जाए तो ratio आधा हो जाता है। इसलिए पहला विकल्प सही है। Density double नहीं होगी क्योंकि population नहीं बढ़ी। परीक्षा में denominator के proportional change को समझना ratio-based questions हल करने में उपयोगी है। / Density is the \(Population/Area\) ratio. If population remains the same while the denominator, area, doubles, the ratio becomes half. Therefore, the first option is correct. Density does not double because population has not increased. In examinations, understanding proportional changes in the denominator helps solve ratio-based questions quickly.

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Question 4/4 Easy Geography The World Population – Distribution, Density and Growth Population Density Class 12 Level 19

यदि जनसंख्या समान रहे और क्षेत्रफल दोगुना हो जाए तो घनत्व क्या होगा?

If population remains unchanged and area doubles what happens to density?

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Correct Answer

B. आधा हो जाएगाIt will become half

Explanation

Simple Explanation

जब population समान रहती है और area दोगुना हो जाता है तो वही लोग दोगुने क्षेत्र में फैले होंगे। इसलिए प्रति वर्ग किलोमीटर औसत लोगों की संख्या आधी हो जाती है और विकल्प B सही है। density और area का संबंध population स्थिर होने पर उल्टा होता है। परीक्षा में यह inverse relationship विशेष रूप से उपयोगी है। / When population remains constant and area doubles the same number of people is spread over twice as much space. The average number of people per square kilometre therefore becomes half and option B is correct. With population fixed density and area have an inverse relationship. In examinations, this relationship is particularly useful for solving comparison questions quickly.

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area doubles MCQ Questions for Class 12

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यदि किसी region में density 200 व्यक्ति प्रति वर्ग किलोमीटर है और area double हो जाए जबकि population 50 प्रतिशत बढ़े, तो new density कितनी होगी?

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यदि population आधी हो और area double हो जाए, तो density क्या होगी?

Simple Explanation

यदि area double हो जाए लेकिन population unchanged रहे, तो density क्या होगी?

Simple Explanation

यदि जनसंख्या समान रहे और क्षेत्रफल दोगुना हो जाए तो घनत्व क्या होगा?

Simple Explanation

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area doubles MCQ Questions for Class 12

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यदि किसी region में density 200 व्यक्ति प्रति वर्ग किलोमीटर है और area double हो जाए जबकि population 50 प्रतिशत बढ़े, तो new density कितनी होगी?

Simple Explanation

यदि population आधी हो और area double हो जाए, तो density क्या होगी?

Simple Explanation

यदि area double हो जाए लेकिन population unchanged रहे, तो density क्या होगी?

Simple Explanation

यदि जनसंख्या समान रहे और क्षेत्रफल दोगुना हो जाए तो घनत्व क्या होगा?

Simple Explanation

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