Q. The velocity with which a projectile must be fired so that it escapes earth's gravitation doesnt depend on
A) mass of the earth
B) Mass of the projectile
C) Radius of the orbit
D) Gravitational constant
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 electron moves with a constant velocity V parallel to the direction of uniform magnetic field B. the force experienced by the electron is
A) BeV
B) eV/B
C) B/eV
D) zero  
Q. when a charged particle moves in a transverse magnetic field, it path of motion is
A) parabolic
B) circular
C) elliptical
D) linear
Q. An electron of mass M kg and charge ‘e’ columbs travel from rest through a potential difference of V volts. The field energy of electron in joule is
A) MeV
B) eV/M
C) eV
D) e/V
Q. what is the SI unit of Young modulus of elasticity
A) dyne/cm
B) newton/m
C) newton/m2
D) m2/s
Q. the most suitable unit for expressing nuclear radius is
A) micron
B) nanometer
C) Fermi
D) angstrom
Q. work function is generally expressed in
A) electron volt
B) joule
C) newton
D) gauss
Q. Which of the following quantities is a vector
A) Area
B) Volume
C) Angle
D) Speed
Q. the dimensional representation of plancks constant is same as that of
A) momentum
B) torque
C) gravitational constant
D) angular momentum
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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