# Free Class 10 Science Chapter 6 Refraction of Light questions answers

We offer free Maharashtra Board Class 10 Science Chapter 6 Refraction of Light questions answers in Pdf format. Our expert team have gone through this chapter and prepared Notes for the students who are facing difficulties in summarizing of this chapter. We assure you that you can score more marks by using our Pdf files. Let us tell you that all the questions answers in concern with this chapter are prepared by our expert teachers team. Here you will find three Pdf files, among them first Pdf files consists of Textbook Questions Answers whereas in second Pdf files you will get the additional extra questions for practices. In the third and last Pdf files, you will get full exercise of this chapter.

You need not worry about the Digest/ Guide because after using our Pdf solutions you will never find need of them. You will get all the Pdf files at the end of this post, so we would like to request you to read full article.

## Class 10 Science Chapter 6 Refraction of Light questions answers in Pdf format:

Here is what you all are waiting for. Teachers, parents and student, now you will find below the Solutions of Class 10 Science Chapter 6 Refraction of Light questions answersFrom the subject English of Maharashtra State Board.

• First method: Below you will see the preview of the solutions where at the right top corner you will find the pop-up window. You have to click on that window.
• Second method: Below outline, you will see the download button where you need to click.

## Class 10 Science Chapter 6 Refraction of Light: Notes

As we go through the entire Class 10 Science Chapter 6 Refraction of Light, we can see there are so many questions asked meanwhile and students are expected to answers them. Some students may face some problem while answering it , but we promise you that after reviewing our answer, you will gain the confidence to answers such questions. Our expert team teacher have divided the solutions into several parts,which will help you to understand this chapter better. Have a look at the following parts:

• Refraction of Light (Can you recall?)
• Refraction of Light (Use your brain power)
• Refraction of Light (Observe/Discuss:)
• Refraction of Light (Let’s Discuss:)
• Refraction of Light (Observe:)
• Refraction of Light (Let’s think:)
• Refraction of Light (Paragraph based questions:)
• Refraction of Light (Questions based on tables and charts:)
• Refraction of Light (Activity based questions:)
• Refraction of Light (Projects:)

## Class 10 Science Chapter 6 Refraction of Light: Question Bank

All those students who are preparing for the final exam and want to score more marks on board can refer to our question bank, among them are some questions may ask you in your final examination.

Beneath, in our Pdf documents, you get the Class 10 Science Chapter 6 Refraction of Light questions answers, however our expert crew have faith in the query bank that allows you to help the students to get more marks.
Our expert team of teachers has prepared the best solutions to these questions. All the answers to these questions are given in our PDF file, which is given below. You can download it for your later study. In Our Pdf file of solutions of the Chapter 5 Heat, you will find the solutions of Important Question bank given below.

#### Important Questions Bank

Rewrite the following statements by selecting the correct options:
Question 1. The change in the direction of propagation of light when it passes obliquely from one transparent medium to another is called………
(a) dispersion
(b) scattering
(c) refraction
(d) reflection

Question 2. When a ray of light travels from air to glass slab and strikes the surface of separation at 90°, then it…………
(a) bends towards the normal
(b) bends away from the normal
(c) passes unbent
(d) passes in zigzag way

Question 3. If a ray of light passes from a denser medium to a rarer medium in a straight line, the angle of incidence must be…………
(a) 0°
(b) 30°
(c) 60°
(d) 90°

Question 4. A ray of light strikes a glass slab at an angle of 50° with the normal to the surface of the slab. What is the angle of incidence?
(a) 50°
(b) 25°
(c) 40°
(d) 100°

Question 5. If a ray of light propagating in air strikes a glass slab at an angle of 60° with the surface of the slab, the angle of refraction is…………
(a) more than 30 °
(b) less than 30 °
(c) 60°
(d) 30°

Question 6. A ray of light gets deviated When it passes obliquely from one medium to another medium because………..
(a) the colour of light changes
(b) the frequency of light changes
(c) the speed of light changes
(d) the intensity of light changes

Question 7. The speed of light in turpentine oil is 2 × 108 m/s. The absolute refractive index of turpentine oil is about……..[Speed of light in vacuum ≈ 3 × 108 m/s]
(a) 1.5
(b) 2
(c) 1.3
(d) 0.67

Question 8. LASER stands for………..
(a) light amplification by stimulated emission of radiation
(b) light and sound energy radiation
(c) light and simulated energy radiation
(d) light amplification by sound energy radiation

Question 9. Out of the following……….has the highest absolute refractive index.
(a) fused quartz
(b) diamond
(c) crown glass
(d) ruby

Question 10. The absolute refractive index…………
(a) is expressed in dioptre
(b) is expressed in m/s
(c) of air is about $$\frac{4}{3}$$
(d) has no unit

Question 11. The speed of light in a medium of refractive index n is………., where c is the speed of light
in vacuum.
(a) $$\frac{c}{n}$$
(b) nc
(c) $$\frac{n}{c}$$
(d) $$\sqrt{\frac{c}{n}}$$

Question 12. The speed of light in a transparent medium having absolute refractive index 1.25 is……….[Speed of light in vacuum ≈ 3 × 108 m/s]
(a) 1.25 × 108 m/s
(b) 2.4 × 108 m/s
(c) 3.0 × 108 m/s
(d) 1.5 × 108 m/s

Question 13. …………light is deviated the maximum in the spectrpm of white light obtained with a glass prism.
(a) Red
(b) Yellow
(c) Violet
(d) Blue

Question 14. ………..light is deviated the least in the spectrum of white light obtained with a glass prism.
(a) Red
(b) Yellow
(c) Violet
(d) Blue

Question 15. A ray of light makes an angle of 50° with the surface S1 of the glass slab. Its angle of incidence will be………….(March 2019)
(a) 50°
(b) 40°
(c) 140°
(d) 0°

Question 16. A glass slab is placed in the path of convergent light. The point of convergence of light:
(a) moves away from the slab
(b) moves towards the slab
(c) remains at the same point
(d) undergoes a lateral shift

Question 17. In refraction of light through a glass slab, the directions of the incident ray and the refracted ray are………… (Practice Activity Sheet – 1)
(a) perpendicular to each other
(b) non-parallel to each other
(c) parallel to each other
(d) intersecting each other

Question 18. If we gradually increase the angle of incidence of a ray of light passing through a prism, then………….. (Practice Activity Sheet – 4)
(a) the angle of deviation goes on decreasing
(b) the angle of deviation decreases but after certain value of incident angle, deviation angle increases
(c) the angle of deviation goes on increasing
(d) the angle of deviation increases but after certain value of incident angle, deviation angle decreases

State whether the following statements are True or False. (If a statement is false, correct it and rewrite it.):

Question 1. The incident ray and the refracted ray of light are on the opposite sides of the normal at the point of incidence.
Question 2. The refractive index of a medium (such as glass) does not depend on the wavelength of light.
Question 3. When a light ray travels obliquely from an optically rarer medium to an optically denser medium, it bends away from the normal.
Question 4. When a light ray travels obliquely from glass to air, it bends towards the normal.
Question 5. If the angle of incidence is 0°, the angle of refraction is 90°.
Question 6. In dispersion of white light by a glass prism, yellow colour is deviated the least.
Question 7. In vacuum, the speed of light does not depend upon the frequency of light.
Question 8. In glass, the speed of violet ray is less than that of red ray.
Question 9. In a material medium, the speed of light depends on the frequency of light.
Question 10. The velocity of light is different in different media.
Question 11. Wavelength of red light is close to 700 nm.
Question 12. Wavelength of orange light is greater than that of blue light.

Answer the following questions in one sentence each:
Question 1. Mention any two phenomena in nature where refraction of light takes place.
Question 2. What is the angle of refraction when the angle of incidence is 0°?
Question 3. In refraction of light, $$\frac{\sin i}{\sin r}$$ = constant in sin a particular case. What is this constant called?
Question 4. If the refractive index of medium 2 with respect to medium 1 is 5/3, what is the refractive index of medium 1 with respect to medium 2?
Question 5. In dispersion of sunlight by a glass prism, which colour is deviated the least?
Question 6. In dispersion of sunlight by a glass prism, which colour is deviated the most?
Question 7. What is the wavelength of violet light?
Question 8. State the relation between 2n1 and critical angle.