Concise Physics Class 9 ICSE Solutions for Chapter 7 - Reflection of Light

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ICSE Class 9 Physics Chapter 7 Selina Concise Solutions - Free PDF Download

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Selina Concise Physics Class 9 ICSE Solutions for Chapter 7 Reflection of Light part-1
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Q1. Outline Some Salient Features of Selina Solutions.

Ans: Following are some of the important features of Selina Solutions. 

  • The solutions are designed based on the ICSE and ISC syllabus.

  • The Selina Solutions representation method is quite good and understandable. 

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Q2. Let’s say that a Beam is an Incident on a Flat Mirror. The Reflected Ray is Making a Right Angle with the Incident Ray. Then, Calculate the Angle of Incidence.

Ans: As per the question, the reflected ray is perpendicular to the incident ray 

That is to say, i + r = 90° 

We know from the law of reflection that i = r 

As per the above statement, angle of incidence = angle of reflection

Or, i + i = 90°

Or, 2i = 90° 

Or, i = r = 45°

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