Q1 An electric charge "q" moves with velocity "v" parallel to the magnetic field B then force on charged particle is
- (a) Bqv
- (b) B/qv
- (c) Zero
- (d) q/Bv
- (c) Zero
Q2 The dimensions of magnetic field intensity are
- a) `M^{1}L^{1}T^{-1}`
- b) `M^{1}T^{-2}A^{-1}`
- c). `M^{1}T^{-2}A^{-2}`
- d). `M^{1}T^{-1}A^{-1}`
- b) `M^{1}T^{-2}A^{-1}`
Q3 Magnetic dipole moment is a vector quantity directed from
- a) east to west
- b) south to north
- c) west to east
- d) north to south
- b) south to north
Q4 The magnetic susceptibility of an ideal diamagnetic substance is
- a) 0
- b) -1
- c) +1
- d) ∞
- b) -1
Q5 A bar magnet of magnetic moment M is cut into two parts of equal lengths. The magnetic moment and pole strength of either part is:
- a) M, m/2
- b) M/2, m
- c) M, m
- d) M/2, m/2
- b) M/2, m
Q6 The force between two magnetic poles is F. If the distance between the poles and pole strengths of each pole are doubled, then the force experienced is:
- a) F
- b) F/4
- c) 2F
- d) F/2
- a) F
Q7 Curie temperature is the temperature above which a ferromagnetic material becomes diamagnetic.
- a) True
- b) False
- b) False
Q8 If horizontal and vertical components of earth's magnetic field are equal, then angle of dip is will be
- (a) `30^{0}`
- (b) `60^{0}`
- (c) `90^{0}`
- (d) `45^{0}`
- (d) `45^{0}`
Q9. A stationary charge experience no magnetic Lorentz force. (T/F)
- a) True
- d) False
- (a) True
Q10 Dimensional formula for magnetic dipole moment is:
- a) `L^{2}A^{-1}`
- b) `L^{2}A^{}`
- c) `L^{2}A^{-2}`
- d) `L^{1}A^{-1}`
- b) `L^{2}A^{}`
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