Physics Quiz on Light

According to the Law of Reflection, what is true about the angle of incidence and the angle of reflection?

• They are always equal

• The angle of incidence is greater

• The angle of reflection is greater

• They are unrelated

If a light ray strikes a mirror at an angle of 45 degrees, what is the angle of reflection?

• 45 degrees

• 30 degrees

• 60 degrees

• 90 degrees

What phenomenon causes the formation of a mirage?

• Reflection

• Diffraction

• Refraction

• Absorption

What is multiple reflection?

• Reflection of light only once

• Reflection of light through a prism

• Reflection of light multiple times between surfaces

• Reflection of sound waves

What defines the atomic number of an element?

• The total number of neutrons

• The total number of electrons

• The number of protons in the nucleus

• The total number of protons and neutrons

Which of the following is an example of a diatomic molecule?

• Ozone (O₃)

• Carbon Dioxide (CO₂)

• Hydrogen (H₂)

• Methane (CH₄)

What type of bond is formed when electrons are shared between atoms?

• Ionic bond

• Metallic bond

• Covalent bond

• Hydrogen bond

What is the process called when a solid changes directly to a gas?

• Melting

• Sublimation

• Evaporation

• Condensation

In the context of light, what does 'refraction' refer to?

• The bending of light as it passes through different mediums

• The reflection of light from a surface

• The absorption of light by an object

• The scattering of light in various directions

Which of the following statements is true about the periodic table?

• All elements in a group have the same number of protons.

• Elements in a period have similar properties.

• The atomic number increases from left to right.

• All elements in a group have different chemical properties.