17. The uncertainty in position of an electron in a certain state is 5 × 10⁻¹⁰ m. The uncertainty in its momentum (in kg·m/s) must be: (A) less than 10⁻²⁶ (B) less than 10⁻²² (C) greater than 10⁻²⁴ (D) greater than 10⁻²² (E) greater than 10⁻²⁰

6. Two far apart charged metal spheres of radius R₁ and R₂ are connected by a long wire in electrostatic equilibrium. The electric potentials and the surface charge densities on them are V₁, V₂ and σ₁, σ₂, respectively. Choose the correct statement. (A) V₁ ＞ V₂, σ₁ ＞ σ₂ (B) V₁ ＜ V₂, σ₁ ＜ σ₂ (C) (D) V₁ = V₂, R₁σ₁ = R₂σ₂ (E) R₁V₁ = R₂V₂, σ₁ = σ₂

17. The uncertainty in position of an electron in a certain state is 5 × 10⁻¹⁰ m. The uncertainty in its momentum (in kg·m/s) must be:
(A) less than 10⁻²⁶
(B) less than 10⁻²²
(C) greater than 10⁻²⁴
(D) greater than 10⁻²²
(E) greater than 10⁻²⁰

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