semiconductors ... silicon, germanium etc ...
The correct answer is
<span>B) UV waves are higher frequency and carry more energy.
In fact, UV waves have higher frequency than visible light. For comparison, visible light has frequency in the range 430-770 THz (</span>

)<span>, while ultraviolets (UV) have frequency higher than these values (at the order of 1 PHz, </span>

).
The energy of electromagnetic radiation is proportional to its frequency, according to the equation

where h is the Planck constant and f is the frequency. We see that the higher the frequency, the greater the energy, so UV waves carry more energy than visible light.
Answer:
work done=0 when angel between 2 objects is 90 degree
Answer:

Explanation:
Total Distance = 
v = Speed = 300 m/s
c = Speed of light = 
Time taken

Time dilation is given by

The difference in time would be

My age will be less than my friends by 