Submitted by misbah Iqbal
1 . Which one has more penetration power
A x Ray
B. Infrared
C visible light
Ans A
2. Wavelength of x Ray is:
A 10^10
B. 10^_10
C 10^ 11
Ans b
3. Which one have high energy
A x Ray
B infrared
C visible. Light
Ans a
4.Energy range of x Ray photon is:
A.10 -15 keV
B.10-150 keV
C.10-50 ke
Ans c
5. Which is advantage of x Ray:
A.Cheapest
B.easily detected
C. Not absob by air
D . All
And d
6.Energy of electrons in electrons differaction is:
A150 ev
B. 200ev
C 300 ev
Ans a
7. How many types of differaction technics
A1
B3
C5
Ans b
8.In loue transmission size of crystal must not:
A greater 1mm
B lesser 1mm
C equal 1mm
Ans a
9.Powder method is for
A poly crystal
B mono crystal
C di atomic crystal
Ans
10) The name of the point at the center of the Brillouin zone
for a diamond lattice is called
a) X
b) L
c K
d). T
Ans d
11 same shape of weigner seitz cell of bcc lattice is equal to
A first b.zone of fcc
B first b.zone of bcc
C first b.zone of SC
Ans a
12 Same shape of weignee seotz cell of a fcc lattice is equal to:
A first b.zone of fcc
B first b.zone of bcc
C first b.zone of Sc
Ans b
13 using symetry we can fold planes of band structure into a …..graph
A 2d
B 3d
C 1 plane
And a
14 Analogous to 1d case b.zone is any ……..l of reciprocal lattic
A SC
B bcc
C permittive unit cell
And c
15.
Which bond is form by transfer of electrons
A ionic
B covelnt
C mettalic
Ans a
Which bond is form by sharing of electrons
A ionic
B covalent
C mettalic
Ans b
17 which bond is form because of free electrons
A ionic
B covalent
C mettalic
Ans c
18 for ewald sphere we take:
A wavelength
B reciprocal of wavelength
D direct lattice
Ans b
19 ewald sphere is use in construction of geometry of:
A x Ray
B electrons
c nuetrons
D all
Ans d