DSSSB - 28 August 2019 (Shift-1)
Reasoning
Medium

If a mirror is placed on the line MN, then which of the answer figures will be the right mirror image of the given figure?

Appeared in: DSSSB - 28 August 2019 (Shift-1)

Explanation

  • The fundamental rule for a mirror image across a vertical mirror is lateral inversion, where left and right are swapped.
  • In the given figure, both the top flag and the bottom tail point to the left.
  • Applying lateral inversion, both the flag and the tail must point to the right in the correct mirror image.
  • The fourth option is the only figure where both elements are correctly inverted to the right.

Why Other Options Were Wrong

  • Option A: This option incorrectly shows the bottom tail pointing to the left. Only the top flag is correctly reflected.
  • Option B: This option incorrectly shows the top flag pointing to the left (unreflected). Only the bottom tail is correctly reflected.
  • Option C: This is an identical copy of the original question figure, not its mirror image. No reflection has been applied.

Related Visual

An infographic demonstrating the principle of lateral inversion. It should show the original figure on the left, a vertical mirror line in the center, and the correct mirror ima...
Clinical Relevance
  • Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain This question tests visual-spatial reasoning, specifically the ability to identify the mirror image of a given figure as background academic context rather than a clinical decision trigger.
  • This question is from the General Intelligence and Reasoning section of the nursing exam.
  • While not directly testing clinical knowledge, it assesses logical and spatial reasoning skills, which are crucial for problem-solving and quick decision-making in a clinical environment.
  • For example, a nurse needs spatial awareness to correctly orient equipment, position patients, and interpret visual data from monitors or charts.
How to Approach the Question
  • First, carefully observe the original figure. Identify its key components and their orientation (up, down, left, right).
  • Note the position of the mirror line (MN). In this case, it's vertical, which means the reflection will be a left-right flip (lateral inversion).
  • Mentally flip the original figure across the mirror line. Imagine each part pointing left now pointing right, and vice-versa.
  • Compare your mentally constructed image with each of the given options.
  • Eliminate the options that do not match your expected reflection. For instance, option C is the original figure, so it can be eliminated immediately.
  • Select the option that perfectly matches the laterally inverted image you visualized.
Concept Tested & Keywords
  • Concept Tested: This question tests visual-spatial reasoning, specifically the ability to identify the mirror image of a given figure.
  • Stem keywords: mirror image, figure, reflection
  • Lead-in keywords: right mirror image

Question ID

Qs54J9gJew25wq-4nvmr71

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