Light & Optics MCQs with Answers

An optic piece of curved transparent glass or plastic that refracts the light in a specific way is called?

• A.Prism
• B.Mirror
• C.Lens
• D.Filter

The image formed by a plane mirror is in size to the object.

• A.Smaller
• B.Larger
• C.Same
• D.None of these

Microscopes are instruments designed to produce _ visual image.

• A.Magnified
• B.Diminished
• C.Inverted
• D.Blurred

What is the main advantage of using red light in traffic signals?

• A.It has the highest energy among visible colors
• B.It can be easily noticed from a long distance
• C.It travels faster than other colors of light
• D.It is the cheapest color to produce electrically

Past Paper MCQ

What is the speed of light in miles per second?

• A.93,000 miles per second
• B.300,000 miles per second
• C.670,000 miles per second
• D.186,000 miles per second

The unit for measuring the length of light waves is ?

• A.Micron
• B.Nanometer
• C.Angstrom
• D.Hertz

Which of the following can be used to focus sunlight at one point?

• A.Glass slab
• B.Concave lens
• C.Plane mirror
• D.Convex lens

According to the first law of reflection _?

• A.The angle of incidence is half of the angle of reflection
• B.The angle of incidence is greater than the angle of reflection
• C.The angle of incidence is less than the angle of reflection
• D.The angle of incidence is equal to the angle of reflection

The enlargement of image is called _?

• A.Magnification
• B.Resolution
• C.Refraction
• D.Dispersion

Which one of the following is not an electromagnetic wave?

• A.Radio waves
• B.X-rays
• C.Sound wave
• D.Ultraviolet rays