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Discovery of Cell

Microscope us...

Question

Microscope used by Robert Hooke had a magnification of

10 - 20

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14 - 42

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8 - 16

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16 - 64

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Solution

The correct option is D $14 - 42$ x
Some of Leeuwenhoek's simple microscopes could magnify objects more than 250 times, but Hooke's compound microscopes only magnified somewhere between 20 and 50 times.
Hence the correct answer is (B)

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8

x -

y -

If ⎛ ⎜ ⎝ \begin{matrix} x - 2 & 2 x - 3 & 3 x - 4 x - 4 & 2 x - 9 & 3 x - 16 x - 8 & 2 x - 27 & 3 x - 64 \end{matrix} ∣ ∣ ∣ ∣ = 0

then x

y^{2} = 4 x

x y = 16

(8 - \frac{1}{x})

64 - \frac{1}{x^{2}}

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64 - \frac{16}{x} + \frac{1}{x^{2}}

64 + \frac{16}{x} + \frac{1}{x^{2}}

α, β

x^{2} - 2 x + 4 = 0

α^{3}, β^{3}

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