Curiosity Class 7 Science Chapter 11 Light: Shadows and Reflections Case Study Questions

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Last Updated on May 4, 2025 by XAM CONTENT

Hello students, we are providing case study questions for class 7 Science. Case study questions are the new question format that is introduced in CBSE board. The resources for case study questions are very less. So, to help students we have created chapterwise case study questions for class 7 Science. In this article, you will find case study questions for cbse class 7 Science chapter 11 Light: Shadows and Reflections.

Chapter	Light: Shadows and Reflections
Book	Curiosity: Textbook of Science for Grade 7
Type of Questions	Case Study Questions
Nature of Questions	Competency Based Questions
Board	CBSE
Class	7
Subject	Science
Useful for	Class 7 Studying Students
Answers provided	Yes
Difficulty level	Mentioned
Important Link	Class 7 Science Chapterwise Case Study

Table of Contents

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Case Study Questions on Light: Shadows and Reflections

Case Study Question 1

Passage: Formation of Shadows

A group of students were experimenting with various materials in a dark room using a torch. They placed different objects—glass, wax paper, and a thick cardboard—between the torch and a white screen to observe the shadow formed. They noticed that the cardboard formed a dark shadow, the wax paper formed a faint shadow, and the glass barely showed any shadow. They concluded that the type of material greatly affects shadow formation.

Q1. What type of material was the cardboard most likely made of?
(a) Transparent
(b) Translucent
(c) Opaque
(d) Luminous

Q2. Which of the following best explains why the wax paper formed a faint shadow?
(a) It is a reflective material
(b) It is opaque and blocks all light
(c) It is translucent and allows partial light to pass
(d) It is luminous and emits its own light

Q3. Why didn’t the glass form a noticeable shadow?
(a) It is a translucent material
(b) It reflects all light
(c) It is opaque
(d) It is transparent and allows light to pass fully

Q4. What condition is not necessary for shadow formation?
(a) A source of light
(b) An opaque object
(c) A screen to capture the shadow
(d) A curved mirror

Correct Answers:
Q1: (c) Opaque
Q2: (c) It is translucent and allows partial light to pass
Q3: (d) It is transparent and allows light to pass fully
Q4: (d) A curved mirror

Difficulty Level: Moderate
Explanation: Shadow formation depends on the material’s transparency and the presence of light and a screen. Curved mirrors are unrelated to basic shadow formation.

Case Study Question 2

Passage: Reflection and Multiple Images

Two friends experimented with mirrors. First, they observed their reflection in a single plane mirror. Then, they arranged two mirrors at different angles—90°, 60°, and 45°—and placed a small object between them. They noticed that the number of images increased as the angle between mirrors decreased.

Q1. How many images will be formed if two mirrors are placed at 90° to each other?
(a) 1
(b) 2
(c) 3
(d) 4

Q2. What is the mathematical formula used to calculate the number of images formed between two mirrors?
(a) 360 ÷ angle between mirrors
(b) 180 × angle between mirrors
(c) (360 ÷ angle between mirrors) − 1
(d) (360 ÷ angle between mirrors) − 1, or odd-even adjustment

Q3. If the angle between the mirrors is reduced to 45°, how many images will be observed?
(a) 4
(b) 6
(c) 7
(d) 8

Q4. Which of the following statements is true about images in a plane mirror?
(a) The image is always real and inverted
(b) The image is virtual and laterally inverted
(c) The image is real and smaller in size
(d) The image is larger and upright

Correct Answers:
Q1: (c) 3
Q2: (d) (360 ÷ angle between mirrors) − 1, or odd-even adjustment
Q3: (c) 7
Q4: (b) The image is virtual and laterally inverted

Difficulty Level: Moderate to Tough
Explanation: The number of images increases as mirror angle decreases. Plane mirrors form virtual, upright, and laterally inverted images.

We hope the given case study questions for Light: Shadows and Reflections Class 7 helps you in your learning.

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Topics from which case study questions may be asked

Reflection of light
Formation of shadows
Pinhole camera

Light enables us to see and also forms shadows and reflections.

Frequently Asked Questions (FAQs) on Light: Shadows and Reflections Case Study Questions

Q1: What are case study questions in Light: Shadows and Reflections?

A1: These are competency-based questions based on real-life situations and concepts from Light: Shadows and Reflections.

Q2: Are case study questions part of Class 7 Science CBSE exams?

A2: Yes, CBSE includes such questions in line with NEP guidelines.

Q3: How can I practice Class 7 case study questions?

A3: Practice from chapterwise question banks and NCERT-integrated sources.

Q4: Are answers provided for Light: Shadows and Reflections case study questions?

A4: Yes, each case study question includes an answer.