Answer: 
Explanation:
Using Weins displacement law:
where
= wavelength = 
b = constant =
T = Temperature in Kelvin = ?
Putting the values we get:

Thus the temperature of the blackbody will be 
Answer:
E.
Explanation:
The photovoltaic cell is an electronic device that produces electricity when exposed to light particles. It is commonly known as solar cells.
Solar cells are used to convert sunlight energy into electricity. Solar cells are those non-mechanical devices that help to change solar energy directly into electricity. This process of conversion is known as the photovoltaic effect.
Therefore, option E is correct.
Refers to a variety of non-linear mathematics in which a number sequence, when graphed, exhibits initial numbers that track or rise relatively horizontally along the x-axis of a graph
Answer:
C.......................................
Answer: Flooding and wet weather are expensive to farming-based land because they cause delays in and reduction of crop harvest. If soil is too wet it can result in poor conditions for the crops to grow; when soil is well drained then the oxygen, things that act as foods and trace elements that the plant needs are available.
Explanation: