WorksheetsGrade 8th Physics: Light
Total questions: 10
Worksheet time: 4mins
What type of mirror is this?
Convex mirror
Concave mirror
Crescent mirror
What is the center of curvature in a convex mirror?
3C
2F
2P
3P
Radius of a spherical mirror is ____ it’s focal length
four times
Thrice
Six times
Twice
The ________ at the point of incidence is called the normal.
Perpendicular
Vertical
Parallel
Horizontal
When two mirrors are kept parallel to each other the number of images is _____________.
34,56,72,12,4,51
5
Limited
Infinite
What is the cause of refraction?
Refraction is caused by the change of speed of light when it goes from country to 5 others
Refraction is caused by the change of speed of light when it passes from one medium to another.
Refraction is caused by the change of speed of light when it jumps to light speed
Refraction is caused by the change of speed of light when it jumps to 5 universes
What are the differences between reflection and refraction of light?
There is no difference
When light ray strike on opaque surface and rebound into the same medium, reflection occurs While Refraction occurs when a ray of light passes from one transparent to another having different densities.
When light ray strike on transparent surface and rebound into the different medium, reflection occurs. While Refraction occurs when a ray of light passes from one transparent to another having different densities.
The splitting of light into its component colours is termed as:
Refraction
Spectrum
Diffraction
Dispersion
If the angle of incident is 30° , what will be the angle of reflection from plane mirror
30
90
60
0
Image formed by the plane mirror is:
Always real
Always virtual
Sometimes real sometimes virtual
None of the above
