WorksheetsOptics and Its Applications
Total questions: 31
Worksheet time: 55mins
A photocopy machine can reduce and enlarge object so that you can get bigger or reduce image. What is the type of lens used in a photocopy machine?
concave
convex
cylinder
A projector will create an inverted image. What is the type of lens used in a projector?
concave
convex
cylinder
A loupe is used to collect rays to one point. It can also magnify object. What is the type of lens used in a loupe?
concave
convex
cylinder
A binocular will make distant object become closer and upright. What is the type of lens used in a binocular?
concave
convex
cylinder
An eye needs a lens to shorten the object to its far point. This lens will also produce an upright image. What is the type of lens needed?
concave
convex
cylinder
An eye needs a lens to concentrate multiple rays into one point. What is the type of eye defect that this eye has?
hyperopia
myopia
astigmatism
What type of eye defect that this eye has?
hyperopia
myopia
astigmatism
An eye needs a lens to shorten the object to its far point. This lens will also produce an upright image. What is the type of eye defect that this eye has?
hyperopia
myopia
astigmatism
What will the corrective lens do to this defect?
Creating further image from the lens so that it will fall in its near point
Creating closer image to the lens so that it will fall in its near point
Creating further image from the lens so that it will fall in retina after the lens refract the object
Creating closer image to the lens so that it will fall in retina after the lens refract the object
What will the corrective lens do to this defect?
Creating closer image for the eye lens so that it will produce image that fall in retina
Creating further image for the eye lens so that it will produce image that fall in retina
Creating further image from the lens so that it will fall in the near point of the eye lens
Creating closer image to the lens so that it will fall in the near point of the eye lens
Which one is the correct ray diagram for concave?
Which is the incorrect ray for convex lens?
red ray
green ray
blue ray
Object is placed 10 cm in front of convex lens with the power of the lens 5 D. What will be the image characteristics?
virtual
real
inverted
upright
bigger
Object is placed 10 cm in front of concave lens with the power of the lens -5 D. What will be the image characteristics?
virtual
real
inverted
upright
bigger
Object is placed 20 cm in front of lens with the power of the lens -1 D. What will be the image characteristics?
virtual
real
inverted
upright
bigger
Object is placed 20 cm in front of lens with the power of the lens 25 D. What will be the image characteristics?
virtual
real
inverted
upright
bigger
Object is placed 25 cm in front of lens with the power of the lens 20 D. What will be the image magnification?
25 %
40 %
250 %
200 %
Object is placed 40 cm in front of lens with the power of the lens -10 D. What will be the image magnification?
20 %
80 %
120 %
75 %
What is the power of the lens so that 10 cm object will have an upright and magnification of 50 % image?
-10 D
10 D
-30 D
30 D
What is the focal length of the lens so that 10 cm object will have an upright and magnification of 150 % image?
30 cm
-30 cm
6 cm
-6 cm
A man with infinity far point and 50 cm near point. What kind of lens that he needs?
2 D
-2 D
-1 D
1 D
A man with 200 cm far point and 50 cm near point. What kind of lens that he needs?
2 D and -0.5 D
-2 D and 0.5 D
-1 D and 2 D
1 D and -0.5 D
A man with glasses with the power of -2 D. What is his near point?
25 cm
5 cm
5 m
50 cm
A man with glasses with the power of -2 D. What is his far point?
25 cm
5 cm
5 m
50 cm
A man needs to change his glasses with the power of -2 D. Previously he used -4 D. What has changed?
His near point has increased by 25 cm
His near point has increased by 25 cm
His far point has increased by 50 cm
His far point has increased by 25 cm
A man used a glasses of -0.5 D to see distant object. For object which is placed 5 m in front of the glasses, find :
The magnification of the created image, write the answer in a form of percentage and two decimals after the dot example 98.52 or 22.12 The ray diagram, draw in a piece of paper then submit it to the Google Classroom.
(a)
A man used a glasses of -1 D to see distant object. Where should the object be placed to have an image which is half of the object? Write the answer in two decimals after the dot and give a space to write unit, example 98.52 D or 22.12 kg.
(a)
A man used a magnifying glass to enlarged three times object which is placed 10 cm of it. Determine :
- The power of the magnifying glass? Write the answer in two decimals after the dot and give a space to write unit, example 98.52 D or 22.12 kg.
- The ray diagram of the magnifying glass, draw in a piece of paper then submit in Google Classroom.
(a)
A man wanted to make a solar oven, for that he would use several lens to be placed around the oven so that the solar heat can be trapped and be used for heating the food. Determine :
- The type of the lens, answer without using capital for example tiger or mathematics
- The ray diagram which will emphasis your choice for the type of the lens, draw in a piece of paper then submit in Google Classroom.
(a)
After understanding this chapter, what part of this chapter that you can apply in real world? Give brief explanation or idea to apply your knowledge. You may sketch your design to visualize your idea. You may answer this question in paper then submit in Google Classroom.
What part of this chapter that you are still having problem with?
