In a Survey of India topographic map of scale 1:50,000, the contours are drawn conventionally at intervals of __________ m.
| Column A | Column B |
| (P) IRS LISS-III | (1) 36 bands |
| (Q) Landsat TM | (2) along track scanner |
| (R) MODIS | (3) across track scanner |
| (S) Hyperion | (4) 18 bands |
| (5) 242 bands |
The reflectance geometry of white-sky albedo can be represented as __________
Clouds appear white in optical visible spectral bands of remote sensing images due to _________ scattering.
If the emissivity of an object varies with wavelength, it is called as __________