Quizzizz_Assignment_FIP36

A simple cubic crystal is irradiated with X-rays of wavelength 0.9 Å at a glancing angle. The crystal is rotated and the angles for Bragg reflections are measured. The set of crystal planes will give the smallest angle for first-order reflection is:

• {220}
• {111}
• {110}
• {100}

The Miller indices (hkl) of the plane sandwiched between two planes (101) and(110) is:

• (212)
• (121)
• (122)
• (211)

Electrons are accelerated to 344 V and are reflected from a crystal. The first reflection occurs when the glancing angle is 60°. The interplanar spacing of the crystal is:

• 6.38 Å
• 4.38 Å
• 2.38 Å
• 0.38 Å

Which of the following is not Dirichlet’s condition for the Fourier series expansion?

• f(x) has finite number of discontinuities in only one period
• f(x) has finite number of maxima and minima
• f(x) is a periodic, single valued, finite
• None

If the function f(x) is even, then which of the following is zero?

• a_n
• a_0
• b_n
• None

Given function is:

• odd

• even

• none

Eigenvectors of Hermitian matrix are

• complex

• orthogonal

• real

• equal

The matrix: X= [1 3 5 7 8] is:

• row matrix

• column matrix

• diagonal matrix

• unitary matrix