Questions with Complete Solutions - Hamro CSIT

A beam of hydrogen atoms is used in a Stern-Gerlach type experiment. The atoms emerge from the oven with a velocity v = 10⁴m/sec. They enter a region 20 cm long where there is a magnetic field gradient $$ \frac{dB}{dz} = 3 \times 10^4 \text{ T/m} $$. The field gradient is perpendicular to the incident velocity of the atoms. The mass of the hydrogen atom is $$ 1.67 \times 10^{-27} \text{ kg}$$. What is the separation of the two components of the beam as they emerge from the magnet?

Not Answered First Semester Asked on 2081 Exam

The output of a digital circuit (\( y \)) is given by this expression:

\[
y = \left( AB + \overline{CB} \cdot A \right) \cdot \overline{B + C}
\]

Where \( A \), \( B \), and \( C \) represent inputs. Draw a circuit of the above equation using OR, AND, and NOT gates and hence find its truth table.

Not Answered First Semester Asked on 2081 Exam

The energy gaps of some alkali halides are KCl = 7.62 eV, KBr = 6.3 eV, KI = 5.6 eV. Which of these are transparent to visible light? At what wavelength does each become opaque?

Not Answered First Semester Asked on 2081 Exam

A beam of hydrogen atoms is used in a Stern-Gerlach type experiment. The atoms emerge from the oven with a velocity \( v = 10^4 \, \text{m/s} \). They enter a region 20 cm long where there is a magnetic field gradient \( \frac{dB}{dz} = 3 \times 10^2 \, \text{T/m} \). The field gradient is perpendicular to the incident velocity of the atoms. The mass of the hydrogen atom is \( m = 1.67 \times 10^{-27} \, \text{kg} \). What is the separation of the two components of the beam as they emerge from the magnet?

Not Answered First Semester Asked on 2081 Exam

What do you mean by the contact potential? Give a schematic of a p-n Junction by illustrating:

(a) Potential difference V, resulting from the positive donor ions in the n-side of the depletion layer and the negative acceptor ions in the p-side of the depletion layer.

(b) Potential energy barrier faced by the majority charge carriers (electrons) in the n-side of the diode as they attempt to cross the junction.

(c) Potential energy barrier faced by the majority side of the diode as they attempt to cross the junction.

Not Answered Physics Asked on 2081 Exam

What is differential equation? Differentiate between ODE and PDE with example.

Not Answered Numerical Method Asked on 2081 Exam

Solve the Poisson equation
\[
\frac{\partial^2 u}{\partial x^2} + \frac{\partial^2 u}{\partial y^2} = -64xy, \quad 0 \leq x \leq 1,\; 0 \leq y \leq 1
\]
with boundary conditions:
\[
u(0, y) = 0,\quad u(x, 0) = 0,\quad u(1, y) = 150,\quad u(x, 1) = 150 \quad \text{and} \quad h = \frac{1}{3}.
\]

Not Answered Numerical Method Asked on 2081 Exam

Solve \(\frac{dy}{dx} = \frac{x}{y}, \quad y(0) = 1\), at \(x = 0.4\) using Runge–Kutta’s \(4^{\text{th}}\) order method.

Not Answered Numerical Method Asked on 2081 Exam

Given the data points below

X 1.0 3.0 4.0

f(x) 1.5 4.5 9.0

Find cubic spline which belongs to 1<=x<=3 and estimate f(2) using cubic splines.

Not Answered Numerical Method Asked on 2081 Exam

Solve the following system of linear equations using Gauss-Jordan elimination method.

x+2y-3z=4

2x+4y-6z=8

x-2y+5z=4

Not Answered Numerical Method Asked on 2081 Exam

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