A 100-watt bulb becomes warm and glows
brightly enough to light a small room. On the
other hand, a 100-watt laser can cut holes in
steel and would not be effective at lighting a
small room.
What is true about the light coming from
these two sources that accounts for these dif-
ferences?
1. Neither of these
2. The light bulb illuminates a room.
3. More information is needed.
4. The laser produces beam of light.
5. Both of these
Both 2 and 4 are true. answer 1 (neither), answer 3, and answer 5 (both) are without usefullness
1. There are five answers, which are "neither"?
2. More information? nope
5. Both (which both, there are four other answers)?
three light bulbs connected in series what is the total resistance
The correct answer is option 2: The light bulb illuminates a room.
The main difference between the light emitted by a 100-watt bulb and a 100-watt laser is the type of light they produce. A regular light bulb emits visible light, which is a mixture of different wavelengths that we perceive as white light. This type of light can spread out and illuminate a room, providing general illumination in all directions. The energy from the bulb is mostly converted into heat and visible light.
On the other hand, a laser produces a highly focused, intense beam of light that consists of a single wavelength or color. The laser light is coherent, meaning it is in phase and can be tightly focused. This concentrated beam of light can have a high amount of energy density and can be used for cutting materials like steel. However, laser light is not suitable for general illumination because it is highly directional and doesn't spread out like light from a bulb.
To summarize, the light bulb emits visible light that can illuminate a room, while the laser produces a focused, intense beam of light that is useful for specific tasks like cutting.