Question

Please help me making upsarg of this

Answer 1

(i) Working of an optical fibre is based on the principle of total internal reflection.

(ii) (a) Light should travel from a denser to rarer medium.

(b) Angle of incidence.

Answer 2

$\huge \mathfrak\fcolorbox{pink}{lavenderblush} {✰ उत्तर ✰}$

मुहावरा – अधजल गगरी छलकत जाए

मुहावरे का हिंदी में अर्थ – जिसमें ज्ञान कम होता है वह दिखावा अधिक करता है।

_________________________

Hope it will help you dear!!!

Please follow!!!

Thank you!!!

⛄ ɴᴀᴢᴜ ❤