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0 votes	938 views	3 answers	According to the Snell's law if an electromagnetic wave is incident in a medium (refractive index n1) on an other medium (refractive index m2); updated 9 years ago by Civil Engineer
0 votes	1138 views	2 answers	The changes in the reflectivity/emis-sivity with time, is called : updated 9 years ago by Civil Engineer
0 votes	1430 views	1 answer	The reflectance from a surface is called specular reflection if it follows updated 9 years ago by Civil Engineer
0 votes	921 views	2 answers	DGPS is based on the concept that bais errors in the position of locations in a given local area, are same if their distances are within updated 9 years ago by Civil Engineer
0 votes	996 views	2 answers	Which one of the following statement is correct ? updated 9 years ago by Civil Engineer
0 votes	908 views	3 answers	The object of photo-intepretation is: updated 9 years ago by Civil Engineer
0 votes	995 views	3 answers	Which one of the following attributes is not associated with digital maps updated 9 years ago by Civil Engineer
0 votes	980 views	4 answers	The maximum sun's radiation occurs around updated 9 years ago by Civil Engineer
0 votes	1025 views	3 answers	Which one of the following quantities forms the basis of radiometery? updated 9 years ago by Civil Engineer
0 votes	1203 views	2 answers	'A time varrying electric field produces a magnetic field.' This phenemenon is called: updated 9 years ago by Civil Engineer