Q. The manifestation of band structure in solids is a consequence of
A) Pauli's exclusion principle
B) Heisenberg's uncertainity principle
C) Bohr's principle  
D) Ohm's law
Q. an electric or magnetic field cannot accelerate
A) electrons
B) protons
C) neutrons
D) alpha particles
Q. the present ages of A and B are 2:5. nine years ago their ages were in the ratio 1:4. find the present age of A
A) 18
B) 20
C) 22
D) 24
Q. the potential energy associated with an electron in the orbit
A) increases with increase in radii of orbit
B) decreases with increase in radii of orbit
C) remains unchanged with the change in radii of the orbit
D) none of these
Q. the saturation current in a diode can be increased by
A) lower plate potential
B) raising plate potential
C) increasing cathode temperature
D)  decreasing cathode temperature
Q. Boundary line between Pakistan and Afghanistan
A) Radcliffe line
B) Durand line
C) maginot line
D) mcmahon line
Q. Which of the following quantities is a vector
A) Area
B) Volume
C) Angle
D) Speed
Q. Thermonic emission was discovered by
A) Thomas Edison
B) lee de forest
C) fleming
D) Rutherford
Q. Boundary line between Pakistan and India
 
A)  Radcliffe line  
B) Durand line  
C) Maginot line  
D) McMahon line
Q. the most suitable unit for expressing nuclear radius is
A) micron
B) nanometer
C) Fermi
D) angstrom
Today Challenging Question
Q. The total CP of two watches is Rs900 One is sold out 20% profit and other at a loss of 25% There is no gain and loss in whole transaction The CP of the cost in whole transaction on which the shopkeeper losses is
A) 400
B) 450
C) 500
D) 540
11 members solved
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