- 1. Optics is the branch of physics that studies the properties and behavior of light. It explores how light interacts with various materials and how it is affected by different mediums. Optics encompasses a wide range of phenomena, including reflection, refraction, diffraction, and interference. This field is crucial in understanding how lenses and mirrors work, which are essential components in devices such as cameras, telescopes, and microscopes. The study of optics has numerous applications in areas such as astronomy, telecommunications, and biomedical imaging.
What is the study of light and its behavior known as?
A) Acoustics
B) Thermodynamics
C) Biology
D) Optics
- 2. What is the phenomenon that causes a pencil to look bent in a glass of water?
A) Diffraction
B) Dispersion
C) Reflection
D) Refraction
- 3. Which type of mirror converges light to form real images?
A) Convex mirror
B) Flat mirror
C) Concave mirror
D) Plane mirror
- 4. What type of lens is used to correct nearsightedness?
A) Cylindrical lens
B) Concave lens
C) Convex lens
D) Bifocal lens
- 5. What is the speed of light in a vacuum?
A) 500,000 miles per second
B) 1 billion feet per second
C) 100,000 kilometers per second
D) 299,792,458 meters per second
- 6. Which color of light has the shortest wavelength?
A) Blue
B) Violet
C) Red
D) Green
- 7. What is the angle of incidence equal to in a reflected ray?
A) Angle of reflection
B) 90 degrees
C) 180 degrees
D) 45 degrees
- 8. Which phenomenon causes the sky to appear blue to the human eye?
A) Rayleigh scattering
B) Refraction
C) Diffraction
D) Dispersion
- 9. What part of the eye is responsible for focusing light onto the retina?
A) Pupil
B) Cornea
C) Lens
D) Iris
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