Question

Can anyone plz explain this first sentence to me. (What is by-and-large here)?
Its from class 10th Science NCERT pg 163​

Answer 1

Answer:

by and large means that statement is mostly true but not completely or totally true

Explanation:

hope it helps u

Answer 2

explaination :-

the reflecting surface of a spherical mirror is by-and-large spherical

iss line ka mtlb h ki jo spherical mirror ka reflection sherical shape ka hi hota h...

the surface, then, has a circular outline ka mtlb h ki jo surface me reflection hogi wo curricular outline me hogi.

the diameter of the reflecting surface of sherical mirror is called it's aperture

iska line ka mtlb h ki jo sherical mirror se jo spherical reflection hua h uss reflection ke diameter ko uska aperture kahte h

thnks you

myself Ashakiran from class 8th