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In a barber's shop, two plane mirrors ar...

In a barber's shop, two plane mirrors are placed

A

perpendicular to each other

B

parallel to each other

C

at an angle of `60^(@)` between them

D

at an angle of `45^(@)` between them

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the placement of two plane mirrors in a barber's shop, we will analyze the situation step by step. ### Step-by-Step Solution: 1. **Understanding the Setup**: In a barber's shop, mirrors are used to allow the barber and the customer to see the back of the customer's head. This is typically achieved using two mirrors. 2. **Analyzing the Options**: We have four options regarding the arrangement of the mirrors: - Option 1: Mirrors are perpendicular to each other. - Option 2: Mirrors are parallel to each other. - Option 3: Mirrors are at an angle of 60 degrees. - Option 4: Mirrors are at an angle of 45 degrees. 3. **Considering the Reflection**: When light reflects off a mirror, it follows the law of reflection, which states that the angle of incidence is equal to the angle of reflection. 4. **Effect of Mirror Arrangement**: - If the mirrors are **perpendicular** (Option 1), the reflection would allow the viewer to see their back, but it would be limited to a smaller area. - If the mirrors are **parallel** (Option 2), the viewer can see a continuous reflection of their back, allowing for a more comprehensive view. - If the mirrors are at an **angle of 60 degrees** (Option 3) or **45 degrees** (Option 4), the reflections would also provide a view, but not as effectively as the parallel arrangement. 5. **Conclusion**: The most effective arrangement for seeing the back of the viewer's head in a barber's shop is when the two plane mirrors are placed **parallel to each other**. ### Final Answer: The correct option is **Option 2: Mirrors are parallel to each other**. ---
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