A beam of light from a source \(L\) is incident normally on a plane mirror fixed at a certain distance \(x\) from the source. The beam is reflected back as a spot on a scale placed just above the source \(L\). When the mirror is rotated through a small angle \(\theta,\) the spot of the light is found to move through a distance \(y\) on the scale. The angle \(\theta\) is given by:
1. \(\frac{y}{x}\)
2. \(\frac{x}{2y}\)
3. \(\frac{x}{y}\)
4. \(\frac{y}{2x}\)

Subtopic:  Reflection at Plane Surface |
 55%
From NCERT
NEET - 2017
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NEET 2023 - Target Batch - Aryan Raj Singh
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A tall man, of height \(6\) feet, wants to see his full image. The required minimum length of the mirror will be:

1. \(12\) feet 2. \(3\) feet
3. \(6\) feet 4. Any length
Subtopic:  Reflection at Plane Surface |
 85%
From NCERT
AIPMT - 2000
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NEET 2023 - Target Batch - Aryan Raj Singh
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To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh