Physics, Light and Reflections Post Assessment

MCQ 01
Which of the following is the speed of light?

• A. 3 metres per second
• B. 30 metres per second
• C. 300 metres per second
• D. 300 000 000 metres per second

MCQ 02
Why can you see most objects?

• A. they emit light
• B. light refracts through them
• C. light reflects off them
• D. they absorb light

Tags

NGSS.4-PS4-2

MCQ 03
Objects that allow only some light to pass through them are considered __________.

• A. transparent
• B. translucent
• C. opaque
• D. solid

MCQ 05
Light is a form of energy produced by a ______.

• A. luminous object
• B. transparent object
• C. non-luminous object
• D. opaque object

MCQ 06
An example for non-luminous object is ___________.

• A. a candle
• B. the sun
• C. an electric bulb
• D. the moon

MCQ 07
The phenomenon by which the incident light falling on a surface is sent back into the same medium is known as ________.

• A. polarization
• B. reflection
• C. refraction
• D. absorption

MCQ 09
When you look at your face in a mirror, where does your face appear to be?

• A. an equal distance behind the mirror to what you are in front
• B. a long way behind the surface of the mirror
• C. on the surface of the mirror
• D. just in front of the mirror

MCQ 011
According to the laws of reflection, if i = angle of incidence and r = angle of reflection,

• A. i =  r
• B. i >  r
• C. r >  i
• D. i is not equal to r

Tags

NGSS.MS-PS4-2

MCQ 013
A ray of light is incident on a plane mirror and the angle of incidence is 25 degrees. What is the angle of reflection?

• A. 0 degrees
• B. 50 degrees
• C. 90 degrees
• D. 25 degrees

MCQ 017
When a parallel beam of light falls on polished silver, 

• A. the light will be scattered
• B. a convergent beam of light will be reflected
• C. a divergent beam of light will be reflected
• D. a parallel beam of light will be reflected