233 102 Physics Revision Quiz 2

If the partial pressure of oxygen (O2) in a gas mixture is 200 mmHg and the partial pressure of nitrogen (N2) is 400 mmHg, what is the total pressure according to Dalton's Law?

• 200 mmHg

• 400 mmHg

• 600 mmHg

• 800 mmHg

• 1000 mmHg

Tags

physics

What part of the human eye is responsible for controlling the amount of light entering the eye?

• Retina

• Cornea

• Iris

• Lens

• Sclera

Which structure in the human eye changes its shape to allow for the fine-tuning of focus on near or distant objects?

• Retina

• Cornea

• Iris

• Lens

• Optic nerve

John gets hit in the eye while playing baseball. What vision defect can affect him if the cornea becomes irregular in shape due to this accident?

• Hyperopia

• Astigmatism

• Myopia

• Presbyopia

• Nearsightedness

What type of corrective lenses are commonly used to treat hypermetropia (farsightedness)?

• Convex lenses

• Concave lenses

• Bifocal lenses

• Progressive lenses

• Prism lenses

In which medium does sound generally travel faster?

• Air

• Water

• Steel

• The speed is the same in all

• Cannot be determined

Which type of solid has mobile electrons in the crystal (sea of electrons)?

• Ionic Crystal

• Metallic Crystal

• Covalent Molecular Crystal

• Covalent Network Crystal

• Amorphous solids

What does wavelength in a sound wave refer to?

• The loudness of the sound

• The speed of the sound

• The duration of the sound

• The distance between successive peaks

• The medium through which the sound travels

If the frequency of a sound wave is increased, how does it affect the pitch of the sound?

• The pitch decreases

• The pitch increases

• The pitch remains constant

• The pitch becomes ultrasonic

• The pitch becomes infrasonic

What is the primary cause of sound production?

• Variation in temperature

• Vibrations of the object

• Presence of light

• Magnetic forces

• Static electricity