1st year Phy Zakariya science academy chowk Azam
The wavelength of x rays is
a) 10¹⁰ b) 10¹² c )10-¹⁰ d) 10 -¹²
As the no of slits increases the separation between slits is
a) increase b) decrease. c) constant. d) none
The grating element is
a) L/N. b) N/L. c) N=L d) N>L
Short questions
1. how would is you manage to get more orders of spectra using a greeting.
2. Why are Polaroid sunglasses better than ordinary sunglasses?
3. How would you distinguish between unpolarized and plane-polarized light.
Zakariya science academy chowk azam
1st year Phy
The wavelength of x rays is
a) 10¹⁰ b) 10¹² c )10-¹⁰ d) 10 -¹²
As the no of slits increases the separation between slits is
a) increase b) decrease. c) constant. d) none
The grating element is
a) L/N. b) N/L. c) N=L d) N>L
Short questions
1. how would is you manage to get more orders of spectra using a greeting.
2. Why are Polaroid sunglasses better than ordinary sunglasses?
3. How would you distinguish between unpolarized and plane-polarized light.
Zakariya Science Academy Chowk Azam
2nd-year
phy
Mass of
¹⁴N7 is
a)
14.0031 U. b) 15 .01 U c) 4.0026 U. d) none
The energy required to produce electron-hole Pair
is
a) 3
EV b ) 4 EV c) both. d) none
The speed
of the alpha particle is
a) -10-¹⁰ m/s. b)
-10¹⁰m/s. c) -1×10⁶m/s d) -3×10-⁸ Question
1.
Describe the mass spectrography, and how it can be used for the detection of
isotopes.