Which physical quantity is the same for microwaves of wavelength 1 mm and UV radiations of 1600 A° in vacuum?

Explanation

To determine which physical quantity is the same for microwaves of wavelength 1 mm and UV radiations of 1600 Å in vacuum, we can follow these steps:

### Step 1: Identify the Wavelengths
- The wavelength of microwaves is given as 1 mm.
- The wavelength of UV radiation is given as 1600 Å (1 Å = 10^-10 m, so 1600 Å = 1600 x 10^-10 m = 1.6 x 10^-7 m).

### Step 2: Understand the Nature of Electromagnetic Waves
- Both microwaves and UV radiation are types of electromagnetic (EM) waves.
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