Physics Multiple Choice Questions (MCQ) with Answers
1-The Packing factor of a simple cubic crystal is
(A) 0.34
(B) 0.52
(C) 0.768
(D) 0.74
2-In ___ ions of different e/m can be made to traverse a circular path of fixed radius by adjusting V and B.
(A) Thomson’s Parabola
(B) Dempster’s mass spectro photograph
(C) Bain bridge’s mass spectro graph
(D) Aston’s mass spectro photograph
3-The wavelength corresponding to the motion of a cricket ball cannot be found by wave mechanics. This is because
(A) the ball does not produce waves
(B) the speed is far less than speed of light
(C) the wavelength is too small to be detected
(D) both (B) and (C)
4-Emitters employed in the Millikan’s apparatus are
(A) Silver halides
(B) Alkali metals
(C) Tungsten fibers
(D) Molyptinum metals
5-Which one of the following is eigen value equation?
(A) Heisenberg’s uncertainty equation
(B) Canonical transformation equation
(C) Schrodinger’s time-independent equation
(D) Newtonian equation of motion
6-In a conductor the energy band gap, between valance and conduction band is
(A) .15 eV
(B) 1.5 eV
(C) infinity
(D) 0 eV
7-The condition to get diffraction in crystal is the wavelength of incident radiation is to the interplanar spacing of the crystal
(A) Comparable
(B) Greater
(C) Lesser
(D) Reciprocal
8-Transistor is a ___ device.
(A) voltage controlled
(B) resistance controlled
(C) input controlled
(D) current controlled
9-X-rays with higher ‘wavelengths are called as
(A) Hard X – rays
(B) Soft X – rays
(C) Moderate X -Rays
(D) Monochromatic X -rays
10- ___ is a square wave oscillator.
(A) monostable multivibrator
(B) bistable multivibrator
(C) astable multivibrator
(D) LCR circuit
ANSWERS:
1-(D), 2-(B), 3-(C), 4-(B), 5-(C), 6-(D), 7-(A), 8-(D), 9-(B), 10-(C)