Answer: True
Explanation: Ceramics have the property that when the band gap present between the atoms are larger than the light energy then the tend to become opaque because the light scattering is caused . They also show the property of being translucent when there are chances of the light to get a path through the surface of ceramic so they get the light at some parts e.g.porcelain .Therefore the statement given is true that ceramics can be optically opaque or semi-transparent(translucent).
Answer:
radius = 9.1 ×
m
Explanation:
given data
applied load = 5560 N
flexural strength = 105 MPa
separation between the support = 45 mm
solution
we apply here minimum radius formula that is
radius =
.................1
here F is applied load and is length
put here value and we get
radius =
solve it we get
radius = 9.1 ×
m
Answer:
False
Explanation:
<u>Alternat</u>or produces <u>alternat</u>ing current ....diodes convert this to direct current
Answer:
No.
Explanation:
= Power rating = 1 W
R = Resistance = 
V = Voltage = 
Power is given by


So

Hence, the resistor is not operating within its power rating.