Name: ＿＿＿＿＿ Exam No.: ＿＿＿＿＿＿＿
I. Multiple choice questions (3 points each, ***39 points)
1. (08 Linyi) the following phenomena related to the light, the correct statement is ( )
A. sunshine, the breeze blowing the river, the shimmering, where the light is contained in the B. Light and the mirror at an angle of 30 ° shot in the plane mirror, the angle of reflection is also 30 °
C. When people look in the mirror, always close to the mirror to see the reason is that close to the image will be bigger
D. Older people look at the book through a magnifying glass to see the words of the real image
2. Zhao students standing in front of the plane mirror with a clock in his hand, shown in the picture is the The image in the plane mirror, then ( )
A. Zhao students away from the plane mirror, the smaller the image
B. Zhao students away from the plane mirror, the larger the image
C. The clock indicates the time is 3 o'clock
D. The clock indicates the time is 9 o'clock
3. Convex lens has a focal length of 12cm, the lighted candle placed 15cm from the convex lens, then the candle passes through the convex lens, then the candle passes through the convex lens. 15cm from the convex lens, the candle through the convex lens into the image of ( )
A, inverted, reduced solid image
B, upright, reduced solid image
C, inverted, enlarged solid image
D, upright, enlarged image
4. The following phenomena belong to the phenomenon of refraction of light is ( )
A, mirage B, the shadow of the
C, the reflection in the water D, the image of a small hole
5, the measurement of visual acuity, the use of plane mirror imaging characteristics can save space. As shown in the figure, let the measured person facing the mirror back to the vision table, the person sees the vision table image from his distance is ( )
A, 3m B, 4m C, 5m D, 6m
6. As shown in the figure of the phenomenon can not be used to explain the knowledge of the linear propagation of light is ( ）
A, a figure B, B C, C D, D figure
7. when an When an object from the convex lens 1.5 times the focal length of the main optical axis to the convex lens four times the focal length of the outside, then the image ( )
A, gradually increasing B, gradually decreasing
C, the first to increase after the decrease D, the first to decrease after the increase
8, the fisherman found that there is a big fish in the water at the point P, and now he wants to use a harpoon will be harpooned fish in the, then ( )
A, the fork against the point P B, the fork above the point P
A. B, against the P point above the fork
C, against the P point below the fork D, the above fork method are wrong
9, (08 Guangzhou) for the 2008 Olympic Games in Beijing and the construction of the National Aquatics Center "Water Cube" transparent film "coat" on the transparent film "coat" of the National Aquatic Center built for the 2008 Olympic Games in Beijing, dotted with countless white dots as shown in the figure, they are called plating points. Beijing Olympic Games held in the height of summer, the plating point can change the direction of light, the light will be blocked outside the stadium, the plating point of the outside sun's main role is ( )
A. Reflection of the sun's rays, follow the law of reflection of light
B. Reflection of the sun's rays, do not follow the law of reflection of light
C. Refraction of the sun's rays, follow the law of refraction of light
D. Refraction of sun rays, do not follow the law of refraction of light
D. D. Refracting the sun's rays, do not follow the law of refraction of light
10, the following light path diagrams, reflecting the light from the water oblique radiation such as air is ( )
11, a beam of light from the air into the water obliquely, when the angle of incidence gradually increased, the size of the angle of refraction will be ( ）
A、unchanged B、gradually decreasing
C、gradually increasing, but always less than D, gradually increasing, may be greater than the angle of incidence
12, the following optical phenomena and their explanations are correct ( )
A. Figure a, diffuse reflection of light disorder, so do not follow the inversion of the law of light
B. Figure b, carpentry masters to observe whether the board is smooth and flat to take advantage of the nature of the propagation of light in a straight line
C. Figure c represents is the imaging of myopia, should wear concave lenses to correct
D. Figure d indicates that the sunlight through the prism dispersion of color light arrangement
13, in the convex lens imaging experiments, to keep the position of the convex lens is unchanged, as shown in the figure, successively so that the candle flame is located in the a, b, c, d, and adjusted the position of the light screen, respectively, the experiments, he summed up the following statements, which is wrong ( )
A. so that the candle flame is located at point a, the screen appears the smallest real image
B. so that the candle flame is located at point b, into a reduced image
C. so that the candle flame is located at point c, the screen appears the largest image
D. so that the candle flame is located at point d, into a magnified image
Two, fill in the blanks (1 point per blank, ****30 points!)
D. so that the candle flame is located at point d, into an enlarged image
B. so that the candle flame is located in point d, into a magnified image
Two, fill in the blanks (1 point per blank, ***30 minutes! )
1. ①, is showing the movie screen; ②, is showing the TV screen TV screen; ③, luminous night pearl; ④, lit oil lamp; ⑤, shiny diamonds and other objects, belong to the light source is ___.
2. Sunlight through a prism, broken down into various colors of light, the formation of a colored band of light on the white screen, a phenomenon called ______________; the band of color light in the order of red, _______, yellow, green _______, ________, purple seven colors of light.
3. The angle between the incident ray of light and the mirror is 300, then the angle between the incident ray of light and the reflected ray is degrees, if the incident ray of light is directed perpendicular to the mirror, then the angle of reflection is degrees.
4. people on the shore to see the position of the fish in the water than the actual position of _________ (fill in the "deep" or "shallow"), the diver in the water to see the position of the street lamp on the shore than the actual position of the deviation of _________ (fill in the "high" or "shallow"), the position of the street lamp on the shore than the actual position of _________ (fill in the "high" or "shallow"). "high" or "low"), are due to the ＿＿＿＿＿＿＿ of light.
5. Standing on the edge of a calm lake, you can see both the water reflecting the blue sky and white clouds, but also see the fish in the water. The former is due to the formation of ___________ and the latter is due to the formation of ________________.
6. Lakeside street lamps from the lake is 3 meters high, the lake is 5 meters deep, reflected in the calm lake water lamps "reflection" is ___ like (fill in the "real" or "imaginary"), it is Due to the formation of light, the "reflection" is meters away from the surface of the lake.
7. Through the water droplets to see the words in the book, the words are ___________ (fill in "shrink" or "magnify"), when the water is equivalent to ______________ mirror.
8. Winter students standing in front of a plane mirror at 3m, she saw the mirror in their own image due to the formation of the phenomenon of light ___________, the distance from her image to the mirror for _______m; now a piece of wood and the plane mirror in general placed behind the mirror at 1m, as shown in the figure, this time she ________ (fill in the "still able to") " or "can not") see her image in the mirror.
9. The production of vision is a very complex process, in the eye, a variety of organs and tissues make up the refractive system of the eye, the entire refractive system is equivalent to a _________ mirror. If the light from a distant object refracted by the refractive system of the eye imaging, according to the figure, the person suffers from ____ ___ (myopia, hyperopia) eye, can be corrected by wearing glasses equipped with __ ___ mirror.
10. The three primary colors of light are ________, ________, ____________.
11. (08 Sichuan Guang'an) when we are here to participate in the examination, the grasslands in Inner Mongolia but presents "white clouds, green grass, cattle and sheep into flocks" of the beauty of the grassland presents green because the grass _________ green light (fill in "absorption" or "reflection"). "or" reflection "); we can see the same white clouds from different directions, because the white clouds produce a __________ reflection of light.
12. The direction of propagation of a beam of parallel light after refraction through a convex lens is shown in Figure A. It can be seen from the figure that the focal length of this convex lens is _______㎝; when a candle is placed at 12㎝ to the left of this convex lens, as shown in Figure B, a (fill in "upright" or "inverted") light can be seen from the right side of this convex lens through the convex lens. "Inverted"), magnified virtual image.
Three, experimental questions (1 point per blank, ***20 points)
1, in the study of the law of reflection of light in the experiment, as shown in the figure.
① As shown in Figure A, when E, F in the same plane, let the incident light along the cardboard E shot to the mirror, the reflected light can be seen on F, measured the size of the angle of incidence and reflection; change the direction of the incident light and then measure several sets of angles of incidence and reflection, so that the purpose is to compare the __________________________________________;
② If the incident ray is moved closer to the session NM, the reflected ray _____________ (fill in "close to" or "away from")
2 The angle of incidence and angle of reflection are measured. "
③ As in Figure B, the cardboard is slowly rotated backward on the axis of the normal to ＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿.
④ The conclusion that can be drawn from this experiment is ＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿.
2. As shown in the figure, a student in the "plane mirror imaging characteristics" experiment, will be a piece of glass plate vertically on a ruler above, and then take two equal length of the candle A and B before and after a vertical on the ruler, light the glass plate before the candle A, with the eyes to observe, and move the glass plate after the candle B, so that it is the same as the image of A in the glass plate. A in the glass plate of the image of coincidence, candle B seems to be lit, in this experiment:
① in the investigation activity on the glass plate placed on the requirements of _______________________;
② ruler is to facilitate the comparison of the relationship between the object and the image of ________.
③ Two equal lengths of candles are used to compare the ________ relationship between the object and the image.
④ If you remove the candle B and put a light screen on its location, the light screen ________ (fill in "can" or "can not") receive the image of the candle, which means that the plane mirror is ________ image.
⑤ If the candle is moved closer to the mirror, the size of the image will ______(fill in "bigger", "smaller" or "unchanged").
3. In the study of convex lens imaging is the experiment:
(1) in the experiment, you should first adjust the candle flame, convex lens, the center of the light screen is roughly in the center of the , and its purpose is to .
(2) when the candle on the left side of the convex lens from the convex lens 20cm, on the light screen to get an inverted equal size of the real image, the focal length of the convex lens is cm; when the candle and then to the convex lens closer to the 5cm, the nature of the image is , , , the use of this principle is made .
(3) to become a reduced solid image, the distance from the candle to the convex lens should be _________________,_________ mirror in life is the use of this imaging characteristics of the application.
(4) in the light seat in order to place a good candle, convex lens, light screen, when the candle is lit no matter how to adjust the distance between them, can not get a clear image on the light screen, the reason is ____________________________________.
Four, graphing questions (2 points per figure, ***8 points)
1, light from the air into the water obliquely, draw the refracted and reflected rays of light path diagram.
2, (08 Guangxi) light from the air into the glass and then out, please complete the light path diagram
3, as shown in the figure, draw the two rays of light after refraction through a convex lens.
4. Draw the two rays of light after refraction through a concave lens as shown in the figure.
Question 1 Question 2
Question 3 Question 4
V. Quiz Questions (3 points)
Cars are familiar to all of us, but do you know why windscreens are not mounted vertically in small cars? Some people say that the windshield tilt installation is to reduce the resistance to traffic, so that the body shape beautiful, in fact, from the safety of driving, tilt installation and an important role, you can use the knowledge of optics to analyze?
Answers
I. Multiple Choice Questions
1 2 3 4 5 6 7 8 9 10 11 12 13
A D D A C C B C C A C C C B D
II. Fill in the Blanks
1. ②, ③, ④
2. Dispersion of light, orange, blue, indigo
3. 120, 0
4. shallow, high, refractive
5. reflection of light, light refraction
6. imaginary, reflection of light, 3
7. magnification, convex lens
8. reflection, 3, still able
9. convex lens, myopic, concave
10. red, green, blue
11. reflection, diffuse
12 . . 15, upright
Three, experimental questions (1 point per blank, ***20 points)
1. ① angle of reflection and angle of incidence size, ② close to, ③ reflected rays, whether the incident ray is in the same plane,
④ the law of reflection of light: slightly
2. ① placed vertically, ② distance, ③ size, ④ can not be, false, ⑤ unchanged
3. . ① at the same height, get a clear image on the light screen, ② 10, inverted, magnified, solid image, projector
③ greater than 2 times the focal length, camera, ④ object distance is less than the focal length
4, graphing questions: slightly
5, questions and answers
Answer: in order to prevent the plane mirror imaging in front of the car, which affects the driver's line of sight