finals qna Flashcards
Does the change in the frequency have any effect on the number of
segments? Wavelength?
Yes, when frequency increases, the number of segments in a standing wave also increases. This is because wavelength is inversely proportional to frequency. Therefore, the number of segments in a standing wave is inversely proportional to its wavelength.
How is the period related to the wave speed? Wavelength?
The period is inversely proportional to wave speed, meaning that as wave speed increases, the period decreases. The period is also directly proportional to wavelength, where an increase in wavelength leads to a longer period.
What happens to the speed of sound wave when temperature increases?
As the temperature of a medium rises, so does the speed of sound waves within it. This occurs because sound waves consist of particles, such as atoms or molecules, that are continuously in motion. With increased temperature, these particles move with greater speed and collide more frequently with one another.
How is the length of air column related to speed of sound wave? Frequency?
The length of an air column is inversely proportional to the speed of a sound wave, and it is directly proportional to the frequency of harmonics.
What happened to the voltage across the resistance box as the current through it was increased? What is the relationship between voltage and current when resistance is fixed?
The voltage increases as the current increases. Thus, voltage is directly proportional to current.
What happened to current when resistance is increased? What is the relationship between current and resistance when voltage is constant?
The current decreases as the resistance increases. Thus, current is inversely proportional to resistance.
What happened to resistance when voltage is increased? What is the relationship between voltage and resistance when current is constant?
The resistance increases as the voltage increases. Thus, resistance is directly proportional to voltage.
How is the refraction of light observed in the experiment?
Refraction of light was evident when it bends as it goes through two different media. If light travels through two mediums with different velocities, the wave nature of the light causes its direction to be altered as it passes from one medium to the other.
What type of image is produced when the object distance is beyond 2F?
When the object distance is beyond 2F (where F is the focal length of the lens), the image formed by the lens exhibits the following characteristics:
1.Real Image:
The image is real, meaning it can be projected onto a screen.
The rays of light actually converge at the image location.
2.Inverted:
The image is upside down (inverted) relative to the object.
3.Reduced Size:
The image is smaller than the object. It appears between F and 2F (the focal point and twice the focal length).
4.Position: The image is located between F and 2F on the opposite side of the lens from the object.
What type of image is produced when the object distance is between F and 2F?
When the object distance is between F (the focal length) and 2F (twice the focal length) in a lens, the image produced has the following characteristics:
1.Real Image:
The image is real, meaning the light rays actually converge at the image location, and it can be projected onto a screen.
2.Inverted:
The image is inverted, meaning it is upside down compared to the object.
3.Magnified:
The image is larger than the object. It appears magnified, as it is formed beyond 2F.
4.Position:
The image is located beyond 2F, on the opposite side of the lens from the object.
What type of image is produced when the object distance is equal to the focal length?
When the object distance is equal to the focal length (F) of a lens, the image produced has the following key characteristics:
1.No Real Image Formed:
The rays from the object passing through the lens become parallel after refraction. This means the rays do not converge to form a real image.
2.Virtual Image:
A virtual image is formed. It appears as though the rays are coming from a point on the same side as the object, behind the lens. This virtual
image cannot be projected onto a screen.
3.Position:
The image is formed at infinity, because the rays after passing through the lens are parallel, implying that they never actually meet.
4.Size:
The image size is infinitely large, and it is highly magnified. This is because the object is at the focal point, and the rays diverge indefinitely after passing through the lens.
What type of image is produced when the object distance is less than the focal length?
When the object distance is less than the focal length (F) of a lens, the image formed has the following characteristics:
1.Virtual Image:
The image is virtual, meaning the light rays do not actually converge to form the image. Instead, they appear to diverge from a point
on the same side as the object, behind the lens.
2.Upright:
The image is upright, meaning it has the same orientation as the object (not inverted).
3.Magnified:
The image is larger than the object. The closer the object is to the lens, the more magnified the image appears.
4.Position:
The image is located on the same side of the lens as the object, and it appears to be at a position beyond the focal point, closer to the lens.
