The total number of images formed by two mirrors inclined at 120° to each other is ________.

2

The correct answer is option 3. 2.

When two mirrors are inclined at an angle to each other, multiple images can be formed. The formula to calculate the total number of images formed by two plane mirrors inclined at an angle θ to each other is given by:

\[ N = \frac{360°}{\theta} - 1 \]

Where:

\( N \) is the total number of images formed.

\( \theta \) is the angle between the mirrors.

In this case, the angle between the mirrors is 120°. Substituting this into the formula:

\[ N = \frac{360°}{120°} - 1 \]
\[ N = 3 - 1 \]
\[ N = 2 \]

So, the correct answer is 2.