GATE Physics: Questions 223 - 226 of 378

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 378 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 250.00 or

Question number: 223

» Electromagnetic Theory » Solutions of Electrostatic and Magnetostatic Problems

Appeared in Year: 2013

MCQ▾

Question

A charge distribution has the charge density given by ρ=Q{δ(xx0)δ(x+x0)} . For this charge distribution the electric field at (2x0,0, 0)

Choices

Choice (4) Response

a.

Qx^4πε0x02

b.

2Qx^9πε0x02

c.

Qx^4πε0x03

d.

Qx^16πε0x02

Question number: 224

» Quantum Mechanics » Linear Vectors and Operators in Hilbert Space

Appeared in Year: 2013

MCQ▾

Question

Which one of the following commutation relation is NOT CORRECT? Here, symbols have their usual meanings.

Choices

Choice (4) Response

a.

[L2,Lz]=0

b.

[Lx,Ly]=iLz

c.

[Lz,L+]=L+

d.

[Lz,L]=L

Question number: 225

» Atomic and Molecular Physics » Spectra of One- and Many-Electron Atoms

Appeared in Year: 2013

MCQ▾

Question

Consider the scattering of neutron by photons at very low energy due to a nuclear potential of range r0 . Given that,

cot(kr0+δ)γk

Where, δ is the phase shift, k the wave number and (γ) the logarithmic deviation of the deuteron ground state wave function, the phase shift is –

Choices

Choice (4) Response

a.

δπ2kr0

b.

δkγkr0

c.

δγkkr0

d.

δπ2kr0

Question number: 226

» Electromagnetic Theory » Solutions of Electrostatic and Magnetostatic Problems

Appeared in Year: 2011

MCQ▾

Question

Two charges q and 2q are placed along the x axes in front of a grounded, infinite conducting plane, as shown in the figure. They are located respectively at a distance of 0.5m and 1.5m from the plane. The force acting on the charge q is

Segment f Segment f: Segment [A, B] Segment g Segment g: Segment [C, D] Segment h Segment h: Segment [C, E] Segment i Segment i: Segment [F, G] Segment j Segment j: Segment [H, I] Segment k Segment k: Segment [J, K] Vector u Vector u: Vector [L, M] Vector u Vector u: Vector [L, M] Vector v Vector v: Vector [P, Q] Vector v Vector v: Vector [P, Q] Vector w Vector w: Vector [R, S] Vector w Vector w: Vector [R, S] Vector a Vector a: Vector [T, U] Vector a Vector a: Vector [T, U] Vector b Vector b: Vector [V, W] Vector b Vector b: Vector [V, W] Point N Point N: Point on uPoint N Point N: Point on uPoint O Point O: Point on uPoint O Point O: Point on u0.5 m text1 = “0.5 m”1.5 m text1_1 = “1.5 m”q text1_2 = “q”2q text1_3 = “2q”x text1_4 = “x”

Two Charges Placed Along X - Axes

In figure two charges placed along x – axes.

Choices

Choice (4) Response

a.

14πε0q2

b.

14πε0q22

c.

14πε02q2

d.

14πε07q22

Sign In