Grade 8th Physics: Light
Quiz
•
Physics
•
8th Grade
•
Practice Problem
•
Medium
Amol Giradkar
Used 243+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of mirror is this?
Convex mirror
Concave mirror
Crescent mirror
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
What is the center of curvature in a convex mirror?
3C
2F
2P
3P
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Radius of a spherical mirror is ____ it’s focal length
four times
Thrice
Six times
Twice
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The ________ at the point of incidence is called the normal.
Perpendicular
Vertical
Parallel
Horizontal
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
When two mirrors are kept parallel to each other the number of images is _____________.
34,56,72,12,4,51
5
Limited
Infinite
6.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
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
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
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.
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