Without light, the life of any creature is not possible on earth because light plays an important role in our life. Without light the earth is incomplete, the whole world is black and all things are black. Light helps us to see, recognize, and understand the difference in an object, according to science. Definition of light: - Light is a form of radiation or energy that our eyes can detect. It is a small part of the electromagnetic spectrum and radiation given by stars like the Sun. Light enables us to see our surroundings. Light always moves in a straight line, Light is electromagnetic radiation that shows the properties of both waves and particles. We detect light with our eyes. When light falls on the surface of an object, some of it is sent back and the process of sending back the light rays falling on the surface of an object is called reflection of light. The main source of light on Earth is the Sun. In historical times, another important source of light for humans was the fire. So let's start this quiz and collect some important multiple choice questions on Light.
1. ... speed of light in vacuum.
A. 3.0 × 108 m s-1
B. 3.0 × 10-8 m s-1
C. 3.0 × 109 m s-1
D. 3.0 × 107 m s-1
2. .... is an Electromagnetic wave.
A. Light
B. Mirror
C. Image
D. Reflect
3. Which lenses are used for the short-sighted defect?
A. Convex
B. Biconvex
C. Concave
D. Flat lenses
4. How many types of lenses?
A. Five
B. Two
C. Three
D. Ten
5. The image created by convex ..... is always virtual and smaller in size?
A. Lance
B. Mirror
C. Light
D. None of these
6. An image created by a .....mirror is always of the same shape as the object?
A. Convex mirror
B. Plane mirror
C. Concave mirror
D. Positive mirror
7. The image created by a concave ..... can not be received on a screen?
A. Lens
B. Mirror
C. Macro
D. Image
8. On which principle does the nature of light depend?
A. Light theory, particle theory
B. Wave theory, Particle theory
C. Speed theory, wave theory
D. Motion theory, light theory
9. Pick the name of that metal which is the best reflector of light?
A. Iron
B. Gold
C. Silver
D. Magnesium
10. The image created on the cinema screen is an example?
A. Real Image
B. Virtual Image
C. Point Image
D. Plane Image
11. Which of the following is the SI unit of power of a lens?
A. Hours
B. Meter
C. Dioptre
D. None of these
12. In which of the following mirror can be used to focus the sunlight?
A. Convex mirror
B. Plane mirror
C. Positive mirror
D. Concave mirror
13. Who has seen the spread of light waves in the first place?
A. Newton
B. Galileo
C. Grammaldi
D. Abraham Lincoln
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