Exploring Optical Instruments

What are the main components of a microscope?

• Objective mirror, light filter, adjustment knob, base plate, eyepiece holder

• Eyepiece, objective lenses, stage, light source, focusing mechanisms.

• Lens cap, stage clips, body tube, foot, nosepiece

• Base, mirror, condenser, diaphragm, arm

Explain how a convex lens affects light rays.

• A convex lens has no effect on light rays.

• A convex lens converges light rays to a focal point.

• A convex lens diverges light rays away from each other.

• A convex lens absorbs all light rays without bending them.

What is the function of a prism in optical devices?

• The function of a prism in optical devices is to refract and disperse light.

• To amplify sound in audio devices.

• To filter out specific colors of light.

• To store light energy for later use.

Compare the image formation in a camera and a human eye.

• A camera uses film to capture images, while a human eye uses a lens to focus light.

• A camera processes images in real-time, while a human eye takes time to adjust to light changes.

• A camera can only capture images in bright light, while a human eye can see in the dark.

• A camera captures static images on a sensor, while a human eye continuously processes images on the retina.

Describe how a telescope gathers light to form images.

• A telescope captures light only during the day.

• A telescope relies on digital sensors to gather light.

• A telescope uses sound waves to create images.

• A telescope gathers light through its primary lens or mirror, focusing it to form images.

What role does the aperture play in optical instruments?

• The aperture is used to focus sound waves in audio devices.

• The aperture regulates light entry and influences image brightness and depth of field.

• The aperture determines the color of the image.

• The aperture controls the zoom level of the lens.

Identify the components of a simple magnifying glass.

• Prism and stand

• Convex lens and frame/handle.

• Flat lens and casing

• Concave lens and base

How does refraction differ from reflection in optics?

• Refraction occurs only in water, while reflection happens in air.

• Reflection changes the speed of light, whereas refraction does not.

• Refraction involves bending of light as it passes through different media, while reflection involves light bouncing off surfaces.

• Refraction is the process of light being absorbed, while reflection is the scattering of light.

Analyze the function of a concave mirror in a makeup mirror.

• A concave mirror magnifies the reflection, allowing for detailed viewing in a makeup mirror.

• A concave mirror is primarily used for lighting rather than viewing details.

• A concave mirror only reflects light without any magnification effects.

• A concave mirror produces a flat reflection, making it unsuitable for makeup.

What are the differences between a digital camera and a film camera?

• Digital cameras require film to operate and cannot be edited.

• Film cameras provide instant feedback on photos taken.

• Digital cameras are bulkier and heavier than film cameras.

• Digital cameras use electronic sensors and allow immediate viewing and editing, while film cameras use light-sensitive film and require development.