POLYCET (2022) Mock Test Refraction of light At Plane Surfaces - 1
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ఈ మాక్ పరీక్షలు స్వీయమూల్యాంకనం మరియు అభ్యాసం కోసం మాత్రమే, చట్టపరమైన వివాదాలకు మాత్రము కాదు.
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మీకు ఏవైనా కీ లోపాలు దొరికితే లోపాలు మాకు తెలియజేయడానికి వెనుకాడవద్దు.
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Question 1 of 20
1. Question
The process of changing speed when light travels from one medium to another is called
a. Interference
b. Reflection
c. Refraction
d. Diffraction -
Question 2 of 20
2. Question
The unit for refractive index is
a. m/s
b. No units
c. m/s square
d. kg/ cube -
Question 3 of 20
3. Question
Consider the following
A: The light ray must travel from denser medium to rarer medium to form Total internal reflection
B: The angle of incidence in denser medium should be greater than the critical angle for the pair of media in contact
a. A is correct, B is false
b. B is correct
c. A is correct
d. B is correct, A is false -
Question 4 of 20
4. Question
1.52 is refractive index for
a. Crown glass
b. Sapphire
c. Ruby
d. Ice -
Question 5 of 20
5. Question
For heart surgery doctor sent a tube to see internal parts on computer.What is that tube?
a. Plastic
b. Synthetic
c. Optical fiber
d. Fiber -
Question 6 of 20
6. Question
The refractive index of medium 1 relative to medium 2 is 4/3.then the refractive index of medium 2 relative to medium 1 is
a. 9/16
b. 4/3
c. 16/9
d. 3/4 -
Question 7 of 20
7. Question
Mirages are an example for
a. Multiple reflection
b. Total internal reflection
c. Critical angle
d. Refraction -
Question 8 of 20
8. Question
Which of the following is a result of change in speed of light at the interface?
a. Reflection
b. Critical angle
c. Refraction
d. refractive index -
Question 9 of 20
9. Question
Which of the following material has less refractive index?
a. Kerosene
b. Rock salt
c. Benzene
d. Diamond -
Question 10 of 20
10. Question
13. 1 micrometer=
a. 10 power -4 m
b. 10 power -8 m
c. 10 power -6 m
d. 10 power -9 m -
Question 11 of 20
11. Question
Optical fibres work on
a. Multiple reflections
b. Total internal reflection
c. Reflection
d. Refraction -
Question 12 of 20
12. Question
1.50 is refractive index for
a. Ice
b. Benzene
c. None
d. Water -
Question 13 of 20
13. Question
The process of changing speed when light travels from one medium to another medium is called
a. Refraction of light
b. Refractive index
c. Reflection of light
d. None -
Question 14 of 20
14. Question
When angle of incidence is equal to critical angle then angle of refraction is equal to?
a. 30 degrees
b. 90 degrees
c. 45 degrees
d. 0 degree -
Question 15 of 20
15. Question
1.54 is the refractive index of which material?
a. Sapphire
b. Ruby
c. Kerosene
d. Rock salt -
Question 16 of 20
16. Question
The basic cause of refraction is
a. When light is incident on a boundary
b. When the refractive indices of two media are equal
c. The change in the speed of light in going from one medium to another
d. When the refractive indices of two media are not equal -
Question 17 of 20
17. Question
If critical angle is 45 degrees, then refractive index is
a. 1.31
b. 1.0003
c. 1.44
d. 1.33 -
Question 18 of 20
18. Question
Observe the following
X: When a mirror is immersed in water,its focal length doesn’t change
Y: Focal length of a mirror is independent of surrounding medium
a. X is right
b. Y is right
c. X , Y are false
d. X , Y are right -
Question 19 of 20
19. Question
A ray of light is incident on a plane surface of refractive index root 3 at certain angle.it is found that the reflected and refracted rays are perpendicular to each other. The angle of incidence is
a. 45 degrees
b. 15 degrees
c. 30 degrees
d. 60 degrres -
Question 20 of 20
20. Question
The critical angle of diamonds
a. 24.4 degrees
b. 24 degrees
c. 26.4 degrees
d. 23.4 degrees