Science
Assertion (A) : A convex mirror always forms an image behind it and the image formed is virtual.
Reason (R) : According to the sign convention, the focal length of a convex mirror is positive.
options
- Both A and R are true, and R is the correct explanation of A.
- Both A and R are true, and R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Reflection of Light
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Answer
Both A and R are true, and R is not the correct explanation of A.
Reason —
Assertion (A) is true because the reflected rays from a convex mirror diverge and when extended backward, they appear to meet at a point behind the mirror. Therefore, the image formed is always virtual, erect, and diminished, regardless of the object’s position.
Reason (R) is true because by convention, distances measured in the direction of the incident light are taken as positive and the focus of a convex mirror lies on the same side as the incident light, hence its focal length is positive.
Hence, both A and R are true, and R is not the correct explanation of A.
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Reason (R) : In this reaction metal ‘X’ is displaced by Hydrogen.
options
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Reason (R) : When two germ cells combine, they restore the normal number of chromosomes in a species.
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