Statement I : The mirror used in searchlight is parabolic. Statement I : All the rays coming from the source at the focus of a parabolic mirror are reflected as an intense parallel begun.

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Q: 120 (CAPF/2013)

Statement I : The mirror used in searchlight is parabolic.
Statement I : All the rays coming from the source at the focus of a parabolic mirror are reflected as an intense parallel begun.

question_subject: 

Science

question_exam: 

CAPF

stats: 

0,30,9,30,6,2,1

keywords: 

{'parabolic mirror': [0, 0, 0, 1], 'searchlight': [0, 0, 0, 1], 'mirror': [0, 0, 0, 1], 'rays': [0, 0, 1, 0], 'focus': [1, 0, 0, 5], 'intense parallel': [0, 0, 0, 1]}

The correct answer is option 1: Both statements are individually true and statement II is the correct explanation of statement I.

Statement I states that the mirror used in a searchlight is parabolic. This is true because a parabolic mirror is commonly used in searchlights. A parabolic mirror has a shape that allows it to reflect light rays in such a way that they converge at a single point, known as the focus. This property of a parabolic mirror makes it suitable for use in searchlights, as it can reflect light from a source placed at the focus in a parallel beam.

Statement II explains that all rays coming from a source at the focus of a parabolic mirror are reflected as an intense parallel beam. This is also true because of the shape of the parabolic mirror. When light rays come from the focus of a parabolic mirror, they are reflected in a parallel manner, forming a concentrated and intense beam of light.

Therefore, both statements are true and statement II provides a correct explanation for statement I.