NTA UGC NET/JRF Exam, June, 2023 Geography

Rayleigh scattering is responsible for blue colour of sky.
• This scattering occurs when particles of smaller size in comparison to wavelength of light comes in their path to option I is correct while II is incorrect because mainly the icebergs in Siberian region is concentrated at some patches & in some seasons only like in the winter season.
• Sunlight after entering into earth atmosphere get scattered. Visible light scattered into 7 colorsVIBGYOR i.e. in sequential manner with increasing wavelength, high frequency means high scattering power due to which violet indigo and blue light scatters the most in atmosphere but our eye is more receptive of Blue, Green and Red light, this causes to appear sky as blue in colour.

Norwegian & Silurian coast have the boundary with Arctic ocean & largely affected by the warm North Atlantic current which is the eastward expansion of gulf stream resulting it makes difficult to form icebergs at Norwegian coast. i.e, coldest month temp ranges b/w 2°C to 5°C. So, option 1 is correct while II is incorrect because, mainly the icebergs in Siberian region is concentrated at some patches and in some seasons i.e. in the winter season.

• Nokrek biosphere reserve is located in the state of Meghalaya, it declared by UNESCO as Biosphere Reserve in 2009
• Nokrek is the highest peak of the Garo hills

A. G. Tansley Coined the term 'Ecosystem' & defined it as a biological assemblage interacting with its associated physical environment & located in a specific place.
There are various principles of ecosystem functioning-: i.e,
• Ecosystem follows the laws of thermodynamics
• Energy flow in ecosystem is unidirectional & non cyclic
• Nutrients & minerals circulates in the environment through large biogeochemical cycle or Nutrient cycles
Example-Oxygen cycle, Nitrogen cycle etc.

Non-structural measures for flood disaster management are intangible measures i.e, without any physical presence used for reduction the risk & impact of disaster.
Various Non-structural measures are
• Flood proofing
• Flood forecasting & warning
• Flood zonation
• Flood preparedness & Response planning
• Flood insurance

The Muslim population is 13.43% of total population of India. From the population point of view most Muslim resided in U.P., Bihar & West Bengal follow it gradually. The highest ratio of Muslim population is in J & K (66.9%) followed by Assam (30.9%), West Bengal (25.7%) & Kerala (24.7%). The lowest ratio is in Mizoram (1.14%).
Among Both UT's & states Lakshadweep have highest proposition of Muslim population i.e (94.3%)

The correct sequence of the stages through which a new boundary under most condition is determined is

(1) Allocation – Assigning the places or allocating it to any institution (Person, Govt., NGO) etc
(2) Delimitation – Fixing the limits of regions particular boundary mainly occured between two parties only in papers (words)
(3) Demarcation – Actually limiting the boundary of a region by physically establishing stones, pillars Roads, Rivers etc.
(4) Maintenance – It occurs in the last for to maintain the boundary condition so that it will cost long

• Theory of industrial location propounded by smith in his book "Industrial location published in 1971.
• His theory of spatial margin location forms the cost-revenue curve on the basis of which profitability of location of any industry is determined.
• Smith attempted to explain his theory though setting a locational flexibility within a spatial range as delimited by intersection of space cost curve and space revenue curve. This can be explained through graphic presentation.

To understand the above question we must have to understand R/k selection theory

R/k selection theory – Proposed by ecologists MacArthur & E.O. Wilson in 1960 Accor to this theory organism can be categorized into selected growth species or & selected growth species.