![subject](/tpl/images/cats/fizika.png)
Physics, 01.10.2021 20:50 diamonds5307
A beam of light created by a concave mirror occurs when:
- a light source is placed exactly at the focal point.
- the angle of incidence is equal to the angle of reflection.
- light rays are perpendicular to the optical axis.
![ansver](/tpl/images/cats/User.png)
Answers: 3
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 18:00
Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 23.06.2019 00:00
Three resistors are connected in series across a 15-v power supply. if the potential drops across resistors 1 and 2 are 4.1 volts and 3.1 volts, what is the exact potential drop (in volts) across resistor 3?
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 23.06.2019 01:00
What is the frequency if a wave that pases a given pount 22 times in 2 seconds
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 23.06.2019 02:00
Explain the difference in reactivity of the elements based on their electron configurations.
Answers: 1
You know the right answer?
A beam of light created by a concave mirror occurs when:
- a light source is placed exactly at the...
Questions
![question](/tpl/images/cats/User.png)
![question](/tpl/images/cats/en.png)
English, 06.01.2021 19:30
![question](/tpl/images/cats/mkx.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 06.01.2021 19:30
![question](/tpl/images/cats/en.png)
English, 06.01.2021 19:30
![question](/tpl/images/cats/biologiya.png)
Biology, 06.01.2021 19:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 06.01.2021 19:30
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 06.01.2021 19:30
![question](/tpl/images/cats/mat.png)
Mathematics, 06.01.2021 19:30
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 06.01.2021 19:30
![question](/tpl/images/cats/himiya.png)
Chemistry, 06.01.2021 19:30