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The focal length of the convex mirror will increase, if the mirror is placed in water. Given below…

Physics20261 markAssertion-reason

Assertion: The focal length of the convex mirror will increase, if the mirror is placed in water.

Reason: The focal length of a convex mirror of radius R is equal to R/2. (Analysis)

Given below are two statements marked, Assertion and Reason. Read the two statements and choose the correct option.
  • (a)Both Assertion and Reason are true and Reason is the correct explanation for Assertion.
  • (b)Both Assertion and Reason are true but Reason is not the correct explanation for Assertion.
  • (c)Assertion is true and Reason is false.
  • (d)Assertion is false and Reason is true.

Answer

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Ray Optics and Optical Instruments

From ISC 2026 Specimen Physics Paper 1, question 1(A)(vii).