UPPCS · প্রশ্ন 4

Arrange the following electromagnetic radiations in decreasing order of their frequencies. 1. Gamma rays 2. Ultraviolet rays 3. Radio waves 4. X-rays Select the correct answer using the code given below.

1. A4, 1, 2, 3
2. B4, 1, 3, 2
3. C1, 4, 3, 2
4. D1, 4, 2, 3