POLYCET (2022) Mock Test Refraction Of Light At Planed Surfaces - 3
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మీకు ఏవైనా కీ లోపాలు దొరికితే లోపాలు మాకు తెలియజేయడానికి వెనుకాడవద్దు.
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Question 1 of 20
1. Question
In the following formula, ‘n’ represent
n= c/v
a. Refractive index
b. Refraction
c. None
d. Reflection -
Question 2 of 20
2. Question
1.50 is refractive index for
a. Benzene
b. Water
c. None
d. Ice -
Question 3 of 20
3. Question
Refractive index of a denser medium n1 =2/5 and rarer medium n2 = root 3/5 So critical angle C of denser medium is______
a. 60 degrees
b. 30 degrees
c. 0 degrees
d. Uncertain -
Question 4 of 20
4. Question
The process of changing speed when light travels from one medium to another medium is called
a. Reflection of light
b. Refractive index
c. None
d. Refraction of light -
Question 5 of 20
5. Question
n1 sin i= n2 sin r is called
a. Snell’s law
b. Fermat’s law
c. Newton’s law
d. Huygens’s law -
Question 6 of 20
6. Question
Which of the following is the reason for the formation of mirage?
a. Total internal reflection
b. Reflection
c. Scattering of light
d. Refraction -
Question 7 of 20
7. Question
Refractive index of a medium is root 2 then its critical angle is
a. 45 degrees
b. 67 degrees
c. 22 degrees
d. None -
Question 8 of 20
8. Question
The reason for twinkling stars are
a. Random refraction
b. Refractive index
c. Reflection
d. Total internal reflection -
Question 9 of 20
9. Question
Relative index of medium doesn’t depend on
a. Frequency of incident light
b. Wavelength of incident light
c. All
d. Nature of material -
Question 10 of 20
10. Question
Patient’s stomach can be viewed by inserting —————pipe
a. Vacuum
b. Water
c. Light
d. None -
Question 11 of 20
11. Question
When a pencil kept in a glass tumbler filled with water seen from the side of the glass,it seems to bend.Due to
a. Dispersion
b. Reflection
c. Refraction
d. Scattering -
Question 12 of 20
12. Question
The process of changing speed when light travels from one medium to another is called
a. Reflection
b. Interference
c. Refraction
d. Diffraction -
Question 13 of 20
13. Question
Sin C= 1/n
In the above formula ‘C’ indicates
a. Refraction
b. Critical angle
c. Refractive index
d. None -
Question 14 of 20
14. Question
When the light ray travels from denser medium to rarer medium ,then the refracted ray —-from normal
a. Moves towards
b. None
c. Passes along the normal
d. Bend’s away -
Question 15 of 20
15. Question
Which of the following material has less refractive index?
a. Benzene
b. Diamond
c. Rock salt
d. Kerosene -
Question 16 of 20
16. Question
How many refraction’s occur on passing through a glass slab?
a. 1
b. 4
c. 3
d. 2 -
Question 17 of 20
17. Question
Which of the following is the example for total internal reflection?
a. Diamond
b. Optical fibre
c. Mirage
d. All -
Question 18 of 20
18. Question
Total internal reflection takes place when the light ray travels from
a. Denser to rarer medium
b. Rarer to denser medium
c. Rarer to rarer medium
d. Denser to denser medium -
Question 19 of 20
19. Question
Patient’s stomach can be viewed by inserting —————pipe
a. Water
b. Light
c. Vacuum
d. None -
Question 20 of 20
20. Question
When angle of incidence is equal to critical angle then angle of refraction is equal to?
a. 45 degrees
b. 30 degrees
c. 0 degrees
d. 90 degrees
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