Chiếu một tia sáng SI lên một gương phẳng tạo với gương một góc 30o. Tìm giá trị của góc phản xạ?

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  I would like to take this ______________ to thank you for supporting me during the hard time.

• Choose the best answer for the following sentence:

   In the modem time, women are more independent, not less ______________ towards their husbands.

   

• Choose the best answer for the following sentence:

   Sheila Hammond, who was only twenty-three when she was elected as a Member of Parliament, said she owed her success all to the way she had been ______________ by her mother, Mary.

   

• Choose the best answer for the following sentence:

   Her father had died of a heart attack when she was only two after his business had been ______________ following a financial scandal.

   

• Choose the best answer for the following sentence:

   Criminal charges had been ______________ him but the matter was closed on his death.

   

• Choose the best answer for the following sentence:

   The press decided to _______________ this information without being able to get at the truth thanks to Mary's skilful management.

   

• Choose the best answer for the following sentence:

   Although many women work in this company, they have achieved ______________ of success.

   

• Choose the best answer for the following sentence:

   Under federal law, it is illegal to ______________ women.

   

• Choose the best answer for the following sentence:

   A(n) ______________ is one who studies and develops ideas about life, thought, or behavior.

   

• Choose the best answer for the following sentence:

   In such a bad situation, you should _____________ of hiring a lawyer.