Answer: 430 nm.
Explanation:
The relation of wavelength and frequency is:
Formula used : 
where,
= frequency =
= wavelength = ?
c = speed of light = 
Now put all the given values in this formula, we get
Thus the wavelength (in nm) of the blue light emitted by a mercury lamp is 430 nm.
True this is true bc yes as you said you're at the most direct point of sunlight
We know, Potential Energy = Force * Height
Here, F = 40 N
h = 5 m
Substitute their values,
U = 40 * 5
U = 200 J
In short, Your Answer would be Option A
Hope this helps!
Answer: In vision, the ventral stream controls identification of an object, and the dorsal stream controls action toward the object.
Explanation: The ventral stream is associated with object recognition and form representation.
Dorsal stream a pathway that carries visual information from the primary visual cortex to the parietal lobe.
Hope it helps :)
