Question

1. Why do you prefer a convex mirror as a rear-view mirror
in vehicles?
গাড়ীৰ পিছফালে চাবৰ বাবে উত্তল দাপােণ কিয় পছন্দ কৰা হয় ?
The magnification produced by a plane mirror is +1. What
is its meaning?
এখন সমতল দাপােণৰ পৰিৱর্ধন +1। ইয়াৰ অর্থ কি?
3. What are defects of vision? A person needs a lens of
power 5.5 diopter for correcting his distance vision. For
correcting his near vision, he needs a lens of power -1.5
diopters. What is the focal length of the lens required for
correcting distance vision?
| 1+1=2
দৃষ্টি প্রতিসৰণমূলক বিকাৰ কি কি? এজন ব্যক্তিৰ দূৰদৃষ্টিগ্রস্ততা সংশােধনৰ
বাবে তেওঁক 5.5 ডায়’প্তাৰ ক্ষমতাৰ লেন্‌ছৰ আৱশ্যক। তেওঁৰ নিকট দৃষ্টিগ্রস্ততাৰ
সংশােধনৰ বাবে আৱশ্যকীয় লেন্‌ছৰ ক্ষমতা –1.5 ডায়’প্তাহ'লে দূৰদৃষ্টিগ্রস্ততাৰ​

Answer 1

Answer:

1.Convex mirror are preferred because they always gives an erect though diminished image.

They also have a wider field of view as they are curved outwards. Thus, convex mirror enables the driver to view much larger area than would be possible with a plane mirror.

Explanation:

Sorry

Rest of all, I don't know.