Question

the aeroplane in the sky appears small because of ​

Answer 1

Very simple..

What is the size of sun and moon . Why they appear small from Earth?

By the same way aeroplane flying in the sky even it is in the way bigger. All this is happend because of distance and angular view of field.

Same feeling you may get easily if you go to very high building and look down in the street , you will see people height way smaller than actual height ..

Answer 2

i hope it will helps u nani