2367. The contour intervals depends on the-. [MOD-20]
                
             
         
        
                                                                        
                    
                    
                                                                                
                    
                    
                                                                                
                            
                                
                            
                            
                                
                            
                            
                                
                            
                            purpose and extend of survey
                         
                    
                    
                                                                                
                    
                    
                                                         
                    
                            
                    ব্যাখ্যা: The choice of suitable contour interval in a map depends upon four principal considerations, These are- (i) Nature of the Terrian, (ii) Scale of the Map, (iii) Accuracy, (iv) Time of Cost.