where to load picture in angular project code example

Example 1: import images angular

export class sample Component implements OnInit {
   imageSrc = 'assets/images/iphone.png'  
   imageAlt = 'iPhone'

Example 2: import images angular

<img [src]="imageSrc" [alt]="imageAlt" />

<img src="{{imageSrc}}" alt="{{imageAlt}}" />