UT 4 - Reflection of Light

What kind of wave doesn't need a material medium to travel?

• pressure waves
• sound waves
• electromagnetic waves
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Which is the correct speed of light?

• 3,00,000 m/s
• 30,000,000 m/s
• 3,00,000 km/hr
• 30,000,000 m/s

Which is not true about reflection at a plane mirror?

• The angle of incidence and angle of reflection are equal
• the normal lies in the same plane as the incident and reflected rays
• the point of incidence is the term for the point where the reflected ray reflects off the mirror
• the point of reflection is the term for the point where the reflected ray reflects off the mirror

The image of an object in a plane mirror appears:

• laterally inverted
• lateraly inverted
• laterally inversed
• lateraly inversed

A blue ceramic vase appears blue because:

• it emits blue light
• it absorbs blue light and reflects all other light
• it reflects blue light and absorbs all other light
• it scatters blue light, and reflects the other colours

A white object and a red object illuminated by pure red light would appear:

• identical
• the red object looks brighter than the white
• the white object looks brighter than the red
• the red object turns invisible

Under blue light, a tomato looks:

• purple
• black
• blue
• red

Subtracting blue light from white light leaves us with:

• yellow light
• pink light
• red light
• green light

Raindrops create rainbows by:

• reflecting light
• bending and splitting light
• partially subtracting light
• colouring the light

Identify the error in the diagram

• the image and object are equal distances from the mirror
• the image and object are the same size
• the image has shifted vertically
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