user-avatar
maxxxxhe
2 năm trước
Một tia sáng từ môi trường (1) có chiết suất n1 = 1,5 đến mặt phân giới của môi trường (2) có chiết suất n2 = 4/3. Biết góc tới i = 60o. Góc khúc xạ là
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Ex 3 Read the email and answer the following question.: ( 1,0 point) Dear Phong, I’m sorry I couldn’t write to you early because I was very busy. Now, we’re staying in a small hotel near a shopping area in District 10. Near my house, there is a cinema, a post office, a supermarket and some cafes. There are some big shops at the end of the street. It is also very noisy here because there’s always a lot of traffic day and night. In my hometown, I live in a quiet street, there are some small shops, a school and a post office in my neighbourhood but there isn’t a park and a cinema. The streets are narrow but they are cleaner and there isn’t so much traffic. The air is much fresher, too. And every house has a backyard and a frontyard. Love, Nam. 1. Why is it very noisy around his hotel? ............................................................................. 2. What are the streets in his neighbourhood like? ……………………………………….. 3. Is there a park in his neighbourhood? ............................................................................... 4.What are the houses in his neighbourhood like? ...............................................................

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team