What is the main topic discussed in the video?

• Magnetism

• Sound waves

• Light

• Electricity

What was observed on sheet R when the torch was shone through sheet P?

• A rectangular patch of light

• A triangular patch of light

• No light at all

• A bright circular patch of light

What can be concluded about sheet R based on the experiment?

• It is opaque

• It is reflective

• It is translucent

• It is transparent

Why is sheet Q considered transparent?

• It absorbs all light

• It allows most light to pass through

• It reflects all light

• It blocks all light

What feature of sheet P allows light to pass through?

• Its material

• Its color

• The hole in the middle

• Its thickness

What shape of light is observed on sheet R and why?

• Square, because of the size of sheet Q

• Triangular, because of the angle of the torch

• Circular, because light passes through a hole

• Rectangular, because of the shape of sheet P

What is the transparency characteristic of the other parts of sheet P?

• Reflective

• Transparent

• Opaque

• Translucent

Which material is likely to be used for sheet R based on its transparency?

• Clear glass

• Cardboard

• Thin paper

• Plastic wrap

What is the purpose of the hole in sheet P?

• To block light

• To allow light to pass through

• To reflect light

• To absorb light

What conclusion can be drawn about the experiment's setup?

• All sheets are opaque

• Different sheets have different transparency levels

• All sheets are reflective

• All sheets are transparent