Question

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Answer 1

Given,

• Distance from the object to the mirror is 12cm
• The object moves 3 cm away from the mirror, hence now the distance from the mirror to the object is 12+3 = 15cm
• The mirror moves 3cm away, therefore now the distance from the mirror to the object is 15+3 = 18cm
• We know that, THE DISTANCE FROM THE OBJECT TO THE MIRROR IS EQUAL TO THE DISTANCE FROM THE MIRROR TO IMAGE.
• So, the distance from image to the object will be 18+18 = 36cm
• ANSWER = 36CM

• Reflection is the change in direction of a moving wave (can be sound wave or light wave etc) due to the smoothness of the surface. Reflection is what helps us see everyday objects.

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Answer 2

Answer:

Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the mideum from which it originated. Common examples include the reflection of light, sound and water waves.

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