What can the maximum number of digits be in the repeating block of digits in the decimal expansion of 1/17? Perform the division to check your answer.

"What is the maximum number of tangents that can be drawn on a circle from a point outside the circle?

A) 1

B) 4 C) 2"

What is the general formula for the maximum number of electrons that can be accommodated in any shell?

What can be said about the profit of a company, which sells tablets, from the following data?

• The profit was maximum in April.
• The profit was maximum in March.
• The profit was same in January and April.
• Nothing can be said about the profit.

A single slit of width b is illuminated by a coherent monochromatic light of wavelength $\lambda$. If the second and the fourth minima in the diffraction pattern at a distance of $1 , \text{m}$ from the slit are at $3 , \text{cm}$ and $6 , \text{cm}$, respectively, from the central maximum, what is the width of the central maximum?

A) $1.5 , \text{cm}$

B) $3.0 , \text{cm}$

C) $4.5 , \text{cm}$

D) $6.0 , \text{cm}$

${ }^{1} \mathrm{C}$ undergoes $\beta^{+}$ decay to ${ }^{11} \mathrm{B}$. What is the maximum energy a positron emitted in the process can possess? Atomic masses: ${ }^{11} \mathrm{C}: 11.0114 \mathrm{u} ; { }^{11} \mathrm{B}: 11.0093 \mathrm{u} ; \mathrm{e}^{-}: 0.005486 \mathrm{u}; 931 \frac{\mathrm{MeV}}{\mathrm{u}}$.

A) Can't be uniquely determined. B) $1.44 \mathrm{MeV}$ C) $833.6 \mathrm{keV}$ D) $933.6 \mathrm{keV}$