CBSE Important Questions for Class 10 Science Chapter 10 Light Reflection and Refraction

CBSE Important Questions for Class 10 Science Chapter 10 PDF

CBSE Important Questions for Class 10 Science Chapter 10 Light Reflection and Refraction are available in a PDF format. By accessing the PDF students can easily navigate through the important questions and solutions allowing for focused study sessions. The PDF provides a structured approach to mastering this chapter and making it an invaluable resource for exam preparation. To access the PDF please refer to the link provided below.

CBSE Important Questions for Class 10 Science Chapter 10 PDF

CBSE Important Questions for Class 10 Science Chapter 10 Light Reflection and Refraction

Below is the CBSE Important Questions for Class 10 Science Chapter 10 Light Reflection and Refraction -

Long Answer Questions (5 Marks)

Thus, the image is of the same size as that of the object and it is real and inverted.

The ray diagram representing the formation of the image by the lens in this case is:

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2. Draw a ray diagram to show the use of a convex lens for the formation of images having the following characteristics.

a. Real & inverted and diminished

Ans: A ray diagram representing a real & inverted and diminished image is given below.

b. Virtual, erect & magnified.

Ans: A ray diagram representing a virtual, erect, and magnified image is given below.

3. A convex lens forms a real and inverted image of a needle at a distance of 50 50 cm. from it. Where is the needle placed in front of the convex lens if the image is equal to the size of objects? Also, find the power of the lens.

Ans: Given, the image is real and inverted at a distance of 50 50 cm.

⇒ v=+50 cm

Also given, Height of image = = Height of object

We know, magnification is given as,

4. One-half of a convex lens is covered with black paper. Will this lens produce a complete image of the object? Verify your answers experimentally. Explain your observations.

Ans: If we cover one-half of a convex lens with black paper it is observed that it produces a complete image of the object.

Representing the given situation with a ray diagram.

Let us consider a convex lens that has a black paper coating on half of it. We maintain a screen on one side of the lens and a burning candle on the other. The burning candle should be positioned such that its picture appears on the screen that is attached to the opposite side of the lens. The image of the burning candle appears fully on the screen. Based on the aforementioned observation, we can thus conclude that while the length of the lens has no effect on the formation of an image, it does have an effect on the brightness of the image that is generated on the screen because half of the lens is covered in black paper, which reduces the quantity of rays going through it.

5. An object 5 5 cm in length is held 25 25 cm away from a converging lens of focal length 10 10 cm. Draw the ray diagram and find the position, size, and nature of the image formed.

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6. A convex lens of focal length 15 cm formed an image 10 cm from the lens. How far is the object placed from the lens? Draw the ray diagram.

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Class 10 Science Important Questions Chapter 9 – Heredity and Evolution	Class 10 Science Important Questions Chapter 10 – Light – Reflection and Refraction
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Benefits of CBSE Important Questions for Class 10 Science Chapter 10

CBSE Important Questions for Class 10 Science Chapter 10 "Light - Reflection and Refraction" provide numerous benefits for students, helping them prepare efficiently for exams. Here are some key advantages:

Focused Learning : These important questions focus on key concepts from the chapter, such as laws of reflection, refraction, the nature of images formed by lenses and mirrors, and the applications of these phenomena, allowing students to concentrate on essential topics.

Exam-Oriented Preparation : The questions are curated based on previous years' papers and the CBSE exam pattern, ensuring that students practice the types of questions that are likely to appear in exams.

Clear Understanding of Concepts : By attempting these questions, students can reinforce their understanding of critical concepts, especially tricky topics like the calculation of focal length, magnification, and the behavior of light rays in various mediums.

Time Management : Practicing these important questions helps students improve their speed and accuracy, enabling them to manage time effectively during exams.

Self-Assessment : Students can assess their level of preparation by solving these questions and identifying areas that need more attention.