Mirror Images Chapter Notes | Science Olympiad Class 4 PDF Download

Introduction

During our childhood, many of us have enjoyed playing dress-up games in front of a mirror and exploring the water bodies with friends. We often wondered if there was someone looking back at us from beneath the water's surface. Little did we know that these experiences held a certain level of reasoning behind them, which is actually tested in various aptitude exams for children.

A Tale about Monu and Sita

Meet Monu and Sita, two Grade 6 students who are preparing for an upcoming Olympiad in November. They were confused about mirror and water images, so they sought guidance from their math teacher, Anita ma'am, to clarify their doubts.

Anita ma'am took the initiative to explain these concepts to Monu and Sita, focusing on the following key points:

• What is a Mirror Image?
• What is a Water Image?
• Problems involving Mirror Images and Water Images, along with solutions.

Anita ma'am also suggested exploring related topics like Geometrical Shapes and Logical Venn Diagrams to strengthen their overall reasoning skills.

What is a Mirror Image?

When we look at a plane mirror, the reflection we see is called a mirror image. It appears almost identical to the actual object but reversed perpendicular to the mirror's surface. For example, if you observe a person in a mirror, their left hand appears as their right hand, and vice versa. You can try this out yourself by standing in front of a mirror.

What is a Water Image?

• A water image refers to the reflection of an object in water. It appears upside down, as the object is vertically inverted. For instance, the reflection of a dog with a bone in a river exemplifies a water image.
• To help Monu and Sita grasp the concepts better, Anita ma'am shared some problems from previous Olympiads along with clear solutions, emphasizing reasoning skills.

Example Problems

Let's explore a few example problems and their solutions to understand mirror and water images better:

Q.1. Water Image of 'RADIANT':
Given the word 'RADIANT,' find its water image.
(a)
(b)
(c)
(d)

Ans. (c)

The correct water image is option C. In water images, the left-hand side and the right-hand side of the image remain in the same position. The only difference is that the top becomes the bottom and the bottom becomes the top. Analyzing the other options helps us eliminate them and arrive at the correct answer.

Q.2. Mirror Image of 'C 6 8 D L A E A P E A':
Identify the correct mirror image of the given figure.
(a)
(b)
(c)
(d)

Ans. (b)

The correct mirror image is option B. By applying the rules of mirror images (such as left-hand side and right-hand side positions), we can eliminate incorrect options and choose the correct one.

Q.3. Mirror Image Placement:
Given a figure and the placement of a mirror, identify the correct mirror image.

(a)

(b)
(c)
(d)

The correct mirror image is option C. By carefully observing the given options and considering the mirror's placement, we can determine the correct answer.

Conclusion

Understanding mirror and water images is crucial for developing reasoning abilities. In this article, we explored the concept of water images, where objects are reflected upside down in water by vertical inversion. We also discussed mirror images, which appear almost identical to the actual object but reversed perpendicular to the mirror's surface. By practicing and mastering these concepts, you can improve your overall reasoning skills.