Answer :
The microscope magnifies things by 4 * 10 to the second power, which is 4 * 100. It means it magnifies things 400 times.
If the spider's lenght is 30 mm normally, under such microscope he will appear to be 30 * 400 = 12000 mm (which is 1200 cm or 12 m).
If the spider's lenght is 30 mm normally, under such microscope he will appear to be 30 * 400 = 12000 mm (which is 1200 cm or 12 m).
The magnification factor is given as [tex]4(10)^2=400[/tex]. Therefore multiplying this by the spider's actual length will give its apparent length.[tex](400)(30 mm) = 12,000[/tex]This gives an apparent length of 12,000 mm.
Since 1,000 mm = 1 m, this apparent length is also equivalent to 12 m.
Since 1,000 mm = 1 m, this apparent length is also equivalent to 12 m.
