Light, Shadow, and Reflection

What are the properties of light?

• Reflection, refraction, dispersion, and polarization

• Solid, liquid, gas, and plasma

• Velocity, acceleration, force, and energy

• Absorption, transmission, diffraction, and interference

Explain the formation of shadows with the help of an example.

• When a mirror reflects the sunlight, it creates a shadow on the ground.

• When a tree blocks the sunlight, it creates a shadow on the ground.

• When a person walks in front of a flashlight, it creates a shadow on the ground.

• When a cloud blocks the moonlight, it creates a shadow on the ground.

Describe the reflection of light using a mirror.

• The reflection of light using a mirror is when light hits a mirror and bounces off at the same angle it hit the mirror, creating a reflection.

• The reflection of light using a mirror is when light gets absorbed by the mirror and disappears.

• The reflection of light using a mirror is when light changes color after hitting the mirror.

• The reflection of light using a mirror is when light passes through the mirror and comes out on the other side.

How does refraction of light occur when it passes through a glass prism?

• The light bends or changes direction due to the change in speed as it moves from one medium to another.

• The light changes color when it passes through the glass prism

• The light stops completely when it enters the glass prism

• The light speeds up as it passes through the glass prism

Differentiate between opaque, translucent, and transparent objects with examples.

• Translucent objects absorb all light

• Transparent objects only allow some light to pass through

• Opaque objects block light completely, translucent objects allow some light to pass through, and transparent objects allow all light to pass through.

• Opaque objects reflect light completely

State the law of reflection of light.

• The angle of reflection is perpendicular to the angle of incidence.

• The angle of incidence is greater than the angle of reflection.

• The angle of incidence is equal to the angle of reflection.

• The angle of reflection is less than the angle of incidence.

Provide an example of a practical based question related to light, shadow, and reflection.

• The angle of incidence is equal to the angle of reflection.

• Reflection occurs only on smooth surfaces.

• Shadows are always black in color.

• Light travels faster in water than in air.

Explain the properties of a pinhole camera and how it forms an image.

• The pinhole camera forms an image through the process of light passing through a small aperture and creating a projection on the opposite side of the camera.

• The pinhole camera forms an image by using a lens to focus the light onto the sensor

• The pinhole camera forms an image by using a mirror to reflect the light onto the film

• The pinhole camera forms an image by using a large aperture to let in more light

How are eclipses formed and what are the different types?

• Eclipses are formed when the Earth, moon, and sun align in a specific way. The different types are solar eclipses and lunar eclipses.

• Eclipses are formed when the Earth, moon, and sun align. The different types are solar eclipses and planetary eclipses.

• Eclipses are formed when the Earth, moon, and stars align. The different types are solar and lunar eclipses.

• Eclipses are formed when the Earth, sun, and stars align. The different types are solar eclipses and lunar eclipses.

Differentiate between luminous and non-luminous objects and their characteristics.

• Luminous objects produce their own light, while non-luminous objects do not produce their own light but can reflect light.

• Luminous objects are transparent, while non-luminous objects are opaque.

• Luminous objects are always hot to the touch, while non-luminous objects are always cold to the touch.

• Luminous objects produce their own sound, while non-luminous objects do not produce any sound.