When one enters a dark room, one is not able to see anything but after some time one's improves vision, this is because of

جب کوئی اندھیرے والے کمرے میں داخل ہوتا ہے تو کچھ نہیں دیکھ پاتا لیکن کچھ دیر بعد اس کی بینائی بہتر ہو جاتی ہے، اس کی وجہ کیا ہے
Answer: The pupil of the eye dilates
Explanation

Answer:

B

When you enter a dark room with bright sunlight, you can't see anything at first. This is due to the small size of the pupil. As we enter the darkroom, our pupils dilate and more light comes into our eyes, so we can see.

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