PROPERTIES OF THE LIGHT

Light travels fastest in ...

• Air

• Water

• Glass

• Vacuum

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The following statement which is not included as properties of light is …..

• Light is a longitudinal wave

• Light is form of energy

• Light travels in a straight line

• Light is a ray which can be seen by eyes

Light rays are often represented by straight lines because …

• Light is a form of energy

• Light travels at high speed

• Light travels in straight lines

• Light rays form a beam of light

Which is the best reason why we cannot see around corners?

• We do not have peripheral vision

• Light bends 90⁰ around corners

• Light travels in a straight line

• Light rays curve but do not go round sharp corners

The rectilinear propagation of light means that …..

• Light travels in a straight line

• Light moves at a very high velocity

• Light molecules have a rectangular pattern.

• Light moves in rectangular beams

The frequency of visible light is ….. Hz.

• 10¹³

• 10¹⁵

• 10¹⁷

• 10¹⁹

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Light travels in the form of …..

• Electromagnetic waves

• Magnetic waves

• Electric waves

• Energy waves

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The speed of light is …..

• Varies with the medium

• 3 x 10⁸ m/s in a vacuum

• slower in water than in air

• all are correct

Tags

NGSS.MS-PS4-2

Gamma rays, X-rays, UV rays, visible light, IR rays, microwaves and radio waves are parts of the …

• Electromagnetic spectrum

• Range of light

• Electric spectrum

• Color wheel

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A burning candle is a/an ….. object.

• Non-luminous

• Luminous

• Opaque

• Translucent