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0 votes	1138 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 10 years ago by Civil Engineer
0 votes	1316 views	2 answers	The changes in the reflectivity/emis-sivity with time, is called : updated 10 years ago by Civil Engineer
0 votes	1613 views	1 answer	The reflectance from a surface is called specular reflection if it follows updated 10 years ago by Civil Engineer
0 votes	1098 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 10 years ago by Civil Engineer
0 votes	1167 views	2 answers	Which one of the following statement is correct ? updated 10 years ago by Civil Engineer
0 votes	1098 views	3 answers	The object of photo-intepretation is: updated 10 years ago by Civil Engineer
0 votes	1166 views	3 answers	Which one of the following attributes is not associated with digital maps updated 10 years ago by Civil Engineer
0 votes	1153 views	4 answers	The maximum sun's radiation occurs around updated 10 years ago by Civil Engineer
0 votes	1206 views	3 answers	Which one of the following quantities forms the basis of radiometery? updated 10 years ago by Civil Engineer
0 votes	1402 views	2 answers	'A time varrying electric field produces a magnetic field.' This phenemenon is called: updated 10 years ago by Civil Engineer