Assertion In refraction from a plane surface, if object is virtual, then its image will be real.
Reason Plane surface always makes opposite natured image. If object is real, then image is virtual and vice-versa.

Options

A. (a) If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
B. (b) If both Assertion and Reason are true but Reason is not correct explanation of Assertion.
C. (c) If Assertion is true but Reason is false.
D. (d) If Assertion is false but Reason is true.

Answer

To solve the given question, we will analyze both the assertion and the reason provided.

### Step 1: Understand the Assertion
The assertion states that "In refraction from a plane surface, if the object is virtual, then its image will be real."

- A virtual object is one that cannot be projected on a screen; it appears to be located behind the optical device (like a mirror or lens).
- In the case of a plane surface, when light rays pass through it, they bend according to Snell's law.

### Step 2: Understand the Reason
The reason states that "A plane surface always makes opposite natured images. If the object is real, then the image is virtual and vice versa."

- This means that if we have a real object (one that can be projected), the image formed will be virtual (it cannot be projected on a screen).
- Conversely, if we have a virtual object, the image formed will be real (it can be projected).

### Step 3: Analyze the Relationship
Now, let's analyze the relationship between the assertion and the reason:

- When a virtual object is placed in front of a plane surface, the light rays diverge as they pass through the surface.
- The extended rays appear to converge at a point on the opposite side of the surface, forming a real image.
- Conversely, if a real object is placed in front of a plane surface, the rays converge at a point on the same side, forming a virtual image.

### Step 4: Conclusion
Since both the assertion and the reason are correct and the reason correctly explains the assertion, we can conclude that:

- The assertion is true: If the object is virtual, then its image will be real.
- The reason is also true: A plane surface always makes opposite natured images.

Thus, the correct answer is that both the assertion and reason are true, and the reason correctly explains the assertion.

### Final Answer
Both the assertion and the reason are correct, and the reason explains the assertion.

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