Saturday, 16 March 2013

Physics MCQs

1) Which one of the following is used to measure the wavelength X-rays
a)    Young’s double slit experiment
b)   Diffraction grating
c)    Bragg’s equation
d)   Stefan’s law

2) Wavelength of x-rays is of the order of
a)    10 A0
b)   1 A0
c)    10 -10cm
d)   10 -12cm

3) Light which has the same property in all directions of vibrations is known as
a)    Polarized light
b)   Monochromatic light
c)    Un-polarized light
d)   None of these