Light Quiz (Theory)
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- Question 1 of 48
1. Question
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- n = sin ( r )
- n = sin ( r )
Sin 45 / sin
Refractive index = ( final answer )
Correct 6 / 6 PointsIncorrect / 6 Points -
- Question 2 of 48
2. Question
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Sin sin ( angle of refraction)
Sin ( 50 ) / sin
Refractive index = ( final answer )
Correct 4 / 4 PointsIncorrect / 4 Points -
- Question 3 of 48
3. Question
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Refractive index = sin sin ( angle of refraction )Sin ( i ) / n = sin
Sin ( 60 ) / = sin ( angle of refraction )Angle = ( final answer )
Correct 5 / 5 PointsIncorrect / 5 Points -
- Question 4 of 48
4. Question
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or real.
Correct 1 / 1 PointsIncorrect / 1 Points -
- Question 5 of 48
5. Question
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( i ) .
( ii ) do not get together on the .
The is formed the retina.
Correct 5 / 5 PointsIncorrect / 5 Points -
- Question 6 of 48
6. Question
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is moving from a more dense to a material.
Angle of is than critical angle.
Correct 4 / 4 PointsIncorrect / 4 Points -
- Question 7 of 48
7. Question
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object distance
= 7 /
magnification = ( final answer )
Correct 4 / 4 PointsIncorrect / 4 Points -
- Question 8 of 48
8. Question
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( ii ) lens . ( final answer )
Correct 1 / 1 PointsIncorrect / 1 Points -
- Question 9 of 48
9. Question
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More as heat loss occurs.
More and chance of .
Correct 5 / 5 PointsIncorrect / 5 Points -
- Question 10 of 48
10. Question
Correct 1 / 1 PointsIncorrect / 1 Points -
- Question 11 of 48
11. Question
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The angle of at which all of the light is totally back and no takes place.
Correct 4 / 4 PointsIncorrect / 4 Points -
- Question 12 of 48
12. Question
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- energy radiations are used to the cell of the and multiplication of cancer cells.
of the skin and similar to that of .
- energy radiations are used to the cell of the and multiplication of cancer cells.
of the skin and similar to that of .
Correct 16 / 16 PointsIncorrect / 16 Points -
- Question 13 of 48
13. Question
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( iii ) 1) This is an that cannot be on the screen because of light don’t actually .
2) Same as the object image.
Correct 6 / 6 PointsIncorrect / 6 Points -
- Question 14 of 48
14. Question
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( i ) Refractive index = 1 / sin
Refractive index = 1 sin ( critical angle)
Refractive index =
Correct 2 / 2 PointsIncorrect / 2 Points -
- Question 15 of 48
15. Question
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- energy radiations are used to the cell of the and multiplication of cancer cells.
of the skin and similar to that of .
Correct 8 / 8 PointsIncorrect / 8 Points -
- Question 16 of 48
16. Question
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( i ) 1) Total internal occurs at any , than .
2) In total reflection all of the are .
( ii ) n = 1 ( c )
= 1 / sin ( 44 )
Refractive index =
( iii ) n = sin r .
angle of refraction = degree ( final answer )
Correct 13 / 13 PointsIncorrect / 13 Points -
- Question 17 of 48
17. Question
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Speed = wavelength
wavelength = frequency
= 2 x 10 ^ 8 / x 10 ^ 14
= x 10 ^ -7
wavelength = x 10 ^ -7 m ( final answer )
Correct 7 / 7 PointsIncorrect / 7 Points -
- Question 18 of 48
18. Question
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( i ) than 1.0 cm = cm
( ii ) than 1.0 cm = Greater than cm
( final answer )
Correct 4 / 4 PointsIncorrect / 4 Points -
- Question 19 of 48
19. Question
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- More
2 ) Produces heat, so interference or noise.
Correct 3 / 3 PointsIncorrect / 3 Points -
- Question 20 of 48
20. Question
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A shines in the mirror .
Mark and measure angle of and of reflection .
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- Question 21 of 48
21. Question
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( ii ) For an angle of of 90 degree,
angle of in water cannot be than the critical angle.
Correct 3 / 3 PointsIncorrect / 3 Points -
- Question 22 of 48
22. Question
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( i ) image object height .
( ii ) An that can be actually formed on the .
Correct 4 / 4 PointsIncorrect / 4 Points -
- Question 23 of 48
23. Question
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( i ) degree.
( ii ) Total takes place .
Angle of critical angle.
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- Question 24 of 48
24. Question
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( iii ) n = 1 /
= 1 / sinrefractive index =
( iv )
Correct 4 / 4 PointsIncorrect / 4 Points -
- Question 25 of 48
25. Question
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( ii ) force length = cm . ( final answer )
Correct 1 / 1 PointsIncorrect / 1 Points -
- Question 26 of 48
26. Question
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( ii ) distance = .
( iii ) travelling towards the and the room becomes .
Correct 5 / 5 PointsIncorrect / 5 Points -
- Question 27 of 48
27. Question
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( i ) 1)
2 ) bright
Correct 2 / 2 PointsIncorrect / 2 Points -
- Question 28 of 48
28. Question
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x 10 ^ 8 ( final answer )
Correct 2 / 2 PointsIncorrect / 2 Points -
- Question 29 of 48
29. Question
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( i ) Angle of is than critical angle.
ray enters from more to denser .
Correct 6 / 6 PointsIncorrect / 6 Points -
- Question 30 of 48
30. Question
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( V ) focal length = cm ( final answer )
Correct 1 / 1 PointsIncorrect / 1 Points -
- Question 31 of 48
31. Question
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( i ) n = sin ( r )
R = sin ( sin ( 89 ) /
Angle of rarefaction = degree
( ii ) ri =
Angle induced = 89
n= sin ( r )
R = sin ( sin / 1.5
= degree ( final answer )
Correct 9 / 9 PointsIncorrect / 9 Points -
- Question 32 of 48
32. Question
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( i )
( ii ) ri = sin ( r )
= sin 45 / sin
Refractive index = ( final answer )
( iii ) Angle of incidence angle
Total internal reflection
Correct 8 / 8 PointsIncorrect / 8 Points -
- Question 33 of 48
33. Question
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lens .
Correct 1 / 1 PointsIncorrect / 1 Points -
- Question 34 of 48
34. Question
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This angle is the angle for total reflection,
if the angle is equal to the angle or it is all of the light will be reflected back.
Correct 6 / 6 PointsIncorrect / 6 Points -
- Question 35 of 48
35. Question
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( ii ) cm . ( final answer )
Correct 1 / 1 PointsIncorrect / 1 Points -
- Question 36 of 48
36. Question
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Magnification = object distance.
Correct 2 / 2 PointsIncorrect / 2 Points -
- Question 37 of 48
37. Question
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( i ) of sound is than the speed of ,so lightning appears before .
( ii ) speed = time
Distance = speed of sound
Correct 8 / 8 PointsIncorrect / 8 Points -
- Question 38 of 48
38. Question
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- images are formed on the and images are formed on screen.
on image coverage, but they do not cover images. - Place the within the focal of the object.
As you look through,the is formed on the side the lens.
- images are formed on the and images are formed on screen.
Correct 12 / 12 PointsIncorrect / 12 Points -
- Question 39 of 48
39. Question
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The angle at which total reflection takes place is angle.
Correct 3 / 3 PointsIncorrect / 3 Points -
- Question 40 of 48
40. Question
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( i ) Speed = x 10 ^ 8
( ii ) speed = wavelength
wavelength = frequency
= 3 x 10 ^ 8 / x 10 ^ 4
Wavelength = x 10 ^ -7 m ( final answer )
Correct 8 / 8 PointsIncorrect / 8 Points -
- Question 41 of 48
41. Question
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The focal is the from the centre of the lens to its .
Correct 3 / 3 PointsIncorrect / 3 Points -
- Question 42 of 48
42. Question
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Time = speed
= / ( 2 x 10 ^ 8 )
Time = x 10 ^ – 10 s ( final answer )
Correct 4 / 4 PointsIncorrect / 4 Points -
- Question 43 of 48
43. Question
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( iii ) blue, green , , red , indigo .
Correct 3 / 3 PointsIncorrect / 3 Points -
- Question 44 of 48
44. Question
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( i ) lens.
( iii ) Ratio of of image and height of object
( iv ) magnification =
Correct 3 / 3 PointsIncorrect / 3 Points -
- Question 45 of 48
45. Question
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They allow transfer of .
It can over distances ( before generation ).It has less ,so the quality of signal is .
Correct 6 / 6 PointsIncorrect / 6 Points -
- Question 46 of 48
46. Question
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( ii ) the and exit points .
between entrance and points.
Correct 4 / 4 PointsIncorrect / 4 Points -
- Question 47 of 48
47. Question
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( v ) and it is .
( vi ) Easier to the object,and if it is not .
Then will not on the film and the will not be formed on the as it will be formed in front.
Correct 8 / 8 PointsIncorrect / 8 Points -
- Question 48 of 48
48. Question
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( ii ) An angle of is than critical angle.
Correct 2 / 2 PointsIncorrect / 2 Points -
