Refraction of Light, Class 10 Science NCERT Solutions

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1. There will be total 20 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying

1. A ray of light traveling in air falls on the surface of a transparent glass slab at an angle of 60º with the normal to the surface. Find the angle made by the refracted ray with the normal within the glass slab. Refractive index of the material of the glass slab is 1.5

Question 1 of 20

2. When a beam of light moves from a rarer medium to a denser medium:

Question 2 of 20

3. Fish anticipates the presence of hunter farther due to

Question 3 of 20

4. No refraction occurs when light goes from

Question 4 of 20

5. You are given kerosene, turpentine and water. In which of these does the light travel fastest? The values of refractive index of given substances are:
For kerosene n = 1.44
For turpentine n = 1.47
Water n = 1.33

Question 5 of 20

6. If the refractive index of two media are equal, then

Question 6 of 20

7. The refractive index is

4

Question 7 of 20

8. Light is refracted when it travels at an angle from water into air because

Question 8 of 20

9. According to Snell's law, the relation between angle of incidence and angle of refraction is

Question 9 of 20

10. The bending of light ray due to change in its speed is

Question 10 of 20

11. A ray of light travelling in air falls on the surface of a rectangular slab of a plastic material whose refractive index is 1.6. If the incident ray makes an angle of 53º with the normal, find the angle made by the refracted ray with the normal (sin 530 = 4/5)

Question 11 of 20

12. If the speed of light in medium 1 and medium 2 are 2.5 x 102 m/s and 2 x 102 m/s respectively then the refractive index of medium 1 with respect to medium 2 is _______.

Question 12 of 20

13. The ratio of sine of angle of incidence to the sine of angle of refraction equals refractive index is called

Question 13 of 20

14. When a ray of light passes from a denser medium to a rarer medium,

Question 14 of 20

15. Light changes its path as the medium changes during the transit. This is because of

Question 15 of 20

16. A coin is placed at the bottom of a bowl and water is poured into it. The coin appears to be ________ due to _______.

Question 16 of 20

17. Whenever light goes from one medium to another, the characteristic that does not change is:

Question 17 of 20

18. When light goes from an optically denser to an optically rarer medium,

Question 18 of 20

19. When light goes from an optically rarer to an optically denser medium,

Question 19 of 20

20. Kerosene floats on water that means it is lighter than water, but

Question 20 of 20

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