I have an SRTM image in .tiff format downloaded from USGS website and I want to extract elevation along a path to a Excel file in the form of distance vs elevation or lat,long. vs elevation. Can anybody tell me how can I do this in ArcGIS?
You can use the 'Construct Points...' tool in the Editor menu to place points along your line at specified intervals or based on m-values then extract values from the SRTM image to points (Spatial Analyst Tools/Extraction/Extract Values to Points). You could build your Excel spreadsheet from the output table.