2. I. Multiple Choice:
1. It controls the light entering the camera by changing its aperture
A. Iris
B. Lens
C. Aperture
D. Diaphragm
2. The part of the eye that contains sensitive cells for light
A. Cornea
B. Retina
C. Optic Nerve
D. Pupil
3. How large is the human eye in terms of diameter?
A. 1.5 cm
B. 2.0 cm
C. 2.5 cm
D. 3.0 cm
4. If you stand in a plane mirror and raise your right hand, the mirror will raise its left
hand. Which of the following explains the situation?
A) Image formed by plane mirror is laterally enlarged.
B) Image formed by plane mirror is laterally inversed.
C) Image formed by plane mirror is horizontally inversed.
D) Image formed by plane mirror is horizontally reduced.
3. 5. How do images in convex mirrors appear?
A) Images formed are always real, inverted and smaller than the object.
B) Images formed are always virtual, inverted and smaller than the object.
C) Images formed are always virtual, upright and smaller than the object.
D) Images formed are always virtual, upright and larger than the object.
6. Why is convex lens called converging lens?
A) When parallel rays of light pass through it they are refracted outwards and refracted
rays meet and cross at the principal center.
B) When parallel rays of light pass through it they are refracted inwards and refracted
rays spread out from the principal center.
C) When parallel rays of light pass through it they are refracted inwards and refracted
rays meet and cross at the principal center.
D) When parallel rays of light pass through it they are refracted outwards and refracted
rays spread out from the principal focus.
7. Why is concave lens called diverging lens?
A) When parallel rays of light pass through it they are refracted outwards and refracted
rays meet and cross at the principal center.
B) When parallel rays of light pass through it they are refracted inwards and refracted
rays spread out from the principal center.
C) When parallel rays of light pass through it they are refracted inwards and refracted
rays meet and cross at the principal center.
D) When parallel rays of light pass through it they are refracted outwards and refracted
rays spread out from the principal focus.
4. 8. How does concave lenses correct nearsightedness?
A) Bring the point of focus backward and on the retina
B) Bring the point of focus forward and on the retina
C) Diverges light to form images on the retina
D) Converges light to form images behind the retina
9. How does convex lenses correct farsightedness?
A) Bring the point of focus backward and on the retina
B) Bring the point of focus forward and on the retina
C) Diverges light to form images on the retina
D) Converges light to form images behind the retina
10. How is presbyopia corrected?
A. Use of Convex Lenses
B. Use of Concave Lenses
C. Use of Bifocal Lenses
D. None of the above
5. II. Identification:
__________11. What properties of light illustrated when there is a change of lights
direction as it pass from one medium to another with different
optical density?
__________12. What optical instrument uses the principle of multiple reflections?
__________13. What will be produced if there is a large opening for diffraction?
__________14. What properties of light explains the occurrence of Mirage?
__________15. Why there is attractive bands of colors in soap bubbles?
III. Ray Diagram
16-20.
21-25.
