Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects

Geography

Insolation and factors affecting it

In Class 11 Geography, this topic explains insolation—the incoming solar radiation received by Earth—and its role in the chapter Solar Radiation, Heat Balance, and Temperature. Students learn how the angle of the Sun’s rays, duration of daylight, latitude, season, Earth–Sun distance, and atmospheric conditions affect the amount of energy reaching different places. The topic also helps them understand why heating varies across Earth’s surface and how these variations influence temperature patterns and the broader heat balance.

Expert · Level 3 · 25 questions

Practice questions

01If the atmosphere is equally clear at two places, why will the place with lower solar altitude receive less insolation at noon?

0 reads0 helpful★ – (0)

Answer and explanation

02What is the most combined reason for higher insolation at the same latitude during summer?

0 reads0 helpful★ – (0)

Answer and explanation

03What is the main geometrical reason for maximum noon insolation near the Tropic of Cancer around the June solstice?

0 reads0 helpful★ – (0)

Answer and explanation

04Why do polar regions not become extremely hot in summer despite very long days?

0 reads0 helpful★ – (0)

Answer and explanation

05If cloud cover increases over a place, what happens first to direct insolation?

0 reads0 helpful★ – (0)

Answer and explanation

06In which situation can total daily insolation be low even when the noon solar angle is relatively high?

0 reads0 helpful★ – (0)

Answer and explanation

07Why can a high mountain region receive more direct insolation than a plain at the same latitude?

0 reads0 helpful★ – (0)

Answer and explanation

08What is the effect of increased atmospheric dust and aerosols on insolation reaching the surface?

0 reads0 helpful★ – (0)

Answer and explanation

09What mainly explains high annual insolation and low seasonal contrast near the equator?

0 reads0 helpful★ – (0)

Answer and explanation

10Why does the Northern Hemisphere have summer near aphelion even though Earth is farther from the Sun?

0 reads0 helpful★ – (0)

Answer and explanation

11In which condition will the same solar energy produce a greater surface heating effect?

0 reads0 helpful★ – (0)

Answer and explanation

12Why is insolation per unit area greater when Sun rays fall vertically on a surface?

0 reads0 helpful★ – (0)

Answer and explanation

13What is the best combined reason for low insolation in mid-latitudes during winter?

0 reads0 helpful★ – (0)

Answer and explanation

14What mainly causes very high direct insolation during daytime in a clear dry desert?

0 reads0 helpful★ – (0)

Answer and explanation

15If the surface reflectivity of an area suddenly increases, what happens to absorbed solar energy?

0 reads0 helpful★ – (0)

Answer and explanation

16Why can maximum daytime temperature fall when cloudiness suddenly increases?

0 reads0 helpful★ – (0)

Answer and explanation

17What is the basic reason for decreasing average annual insolation toward higher latitudes?

0 reads0 helpful★ – (0)

Answer and explanation

18Scattering of solar radiation increases diffuse light. What is its effect on direct insolation?

0 reads0 helpful★ – (0)

Answer and explanation

19Which surface is most likely to absorb the least energy despite the same incoming insolation?

0 reads0 helpful★ – (0)

Answer and explanation

20If sunrise is early and sunset is late but thick clouds persist all day, why can total surface insolation decrease?

0 reads0 helpful★ – (0)

Answer and explanation

21At which level is the meaning of solar constant most appropriate?

0 reads0 helpful★ – (0)

Answer and explanation

22In which situation will the insolation difference between two places at the same latitude be mainly explained by local atmospheric transparency?

0 reads0 helpful★ – (0)

Answer and explanation

23Which factor can slightly add to insolation in the Southern Hemisphere summer around January?

0 reads0 helpful★ – (0)

Answer and explanation

24Which factor can make a slope receive more insolation than an equal area of flat land?

0 reads0 helpful★ – (0)

Answer and explanation

25Why can the surface heating effect in dense forest differ from an open dry area?

0 reads0 helpful★ – (0)

Answer and explanation

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.