With reference to the Earth’s atmosphere, which one of the following statements is correct? [2023]
With reference to the Earth’s atmosphere, which one of the following statements is correct? [2023]
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The onset of the 13th century heralded the fragmentation of the once-mighty Chola and Chalukya empires, paving the way for the emergence of four distinct kingdoms within the region. To the south, the Pandyas and Hoysalas rose to prominence, while the northern territories saw the ascendance of the KaRead more
The onset of the 13th century heralded the fragmentation of the once-mighty Chola and Chalukya empires, paving the way for the emergence of four distinct kingdoms within the region. To the south, the Pandyas and Hoysalas rose to prominence, while the northern territories saw the ascendance of the Kakatiyas and Yadavas as influential powers. Simultaneously, the Gurjara-Pratihara dynasty was effectively eradicated from the political arena by the invading Ghaznavids in the early 11th century.
Following the disintegration of the Gurjara-Pratihara empire, no single state emerged to fill the void. Instead, a tapestry of smaller, independent powers took root, including the Gahadavalas in Kannauj, the Paramaras in Malwa, the Chalukyas in Gujarat, the Chauhans in Ajmer, the Tomars in Delhi, and the Chandellas in Bundelkhand, each vying for control and influence.
The timelines of these dynasties are noteworthy: the Hoysala dynasty thrived from the 10th to the 14th centuries, the Gahadavala rulers reigned during the 11th to 12th centuries, the Kakatiya rulers held power from the 12th to the 14th centuries, and the Yadava rulers dominated from the 12th to the 14th centuries.
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Correct Answer: Infrared waves are largely absorbed by water vapor that is concentrated in the lower atmosphere. Explanation: "The total amount of insolation received at the equator is roughly about 10 times that received at the poles." Incorrect. While there is a significant difference in insolatioRead more
Correct Answer: Infrared waves are largely absorbed by water vapor that is concentrated in the lower atmosphere.
Explanation:
- “The total amount of insolation received at the equator is roughly about 10 times that received at the poles.”
- “Infrared rays constitute roughly two-thirds of insolation.”
- “Infrared waves are largely absorbed by water vapor that is concentrated in the lower atmosphere.”
- “Infrared waves are a part of the visible spectrum of electromagnetic waves of solar radiation.”
See lessIncorrect.
While there is a significant difference in insolation between the equator and the poles due to the angle of incidence of solar radiation, it is not as extreme as 10 times. The actual difference is much smaller, generally ranging from 2 to 3 times.
Incorrect.
Infrared rays are part of the electromagnetic spectrum, but they only constitute a small portion of the incoming solar radiation (insolation). The majority of insolation consists of visible light and ultraviolet radiation.
Correct.
Infrared waves, which are long-wavelength radiation, are absorbed by greenhouse gases such as water vapor, carbon dioxide, and methane. Water vapor, concentrated in the lower atmosphere (troposphere), plays a major role in absorbing and trapping infrared radiation, contributing to the greenhouse effect.
Incorrect.
Infrared waves are not part of the visible spectrum. The visible spectrum includes wavelengths between 400-700 nanometers, whereas infrared waves are longer than this range and are not visible to the human eye.