How to get mat select selected value in tool tip using angular material

I am displaying a drop down using angular material mat select. I want to display selected element using material tool tip.

<mat-select [(ngModel)]="emp" [(value)]="selected" matTooltip="{{selected}}"
(openedChange)="oChange($event)" placeholder="Employee" [formControl]="toppings" multiple>
<mat-option *ngFor="let p of emp" [value]="p" >{{p.name}}</mat-option>
</mat-select>
</mat-form-field>


But its showing [object object]

Here is content of emp

emp[
{"id":0101,"name":"damshad"},
{"id":0102,"name":"ranjan"},
{"id":0103,"name":"himanshu"},
{"id":0104,"name":"gourge"},
{"id":0105,"name":"taffic"},
{"id":0106,"name":"ajir"},
{"id":0107,"name":"mallom"}
]

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