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11 Questions

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Optics MCQ 1

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Questions and Answers

What is the speed of light?

4 x 10^8 ms^-1

3 x 10^8 ms^-1 (correct)

5 x 10^8 ms^-1

2 x 10^8 ms^-1

Which type of reflection occurs off a rough surface?

Diffuse Reflection (correct)

Refractive Reflection

Regular Reflection

Virtual Reflection

What is the definition of Refractive Index?

Ratio of wavelength to amplitude of light

Ratio of intensity to frequency of light

Ratio of speed of light in vacuum to another medium (correct)

Ratio of incident light to reflected light

Which mirrors produce only virtual images?

Convex mirrors Signup and view all the answers

When does a real image form?

Due to the actual intersection of light rays Signup and view all the answers

According to the Laws of Reflection, what do the reflected ray, incident ray, and normal at the point of incidence have in common?

They lie in the same plane Signup and view all the answers

Which mirror is commonly used in supermarkets and cars to provide a wide field of view?

Convex mirror Signup and view all the answers

What happens to light when it goes from a denser to a rarer medium?

Refracted away from normal Signup and view all the answers

What formula is used to calculate the focal length, object distance, and image distance of lenses?

1/f = 1/u +1/v Signup and view all the answers

What type of system is produced by the human eye with its lens and cornea?

Converging system Signup and view all the answers

What can light travel through by total internal reflection, providing a communication pathway?

Optical fibre Signup and view all the answers