Related Questions

The weight of an aluminium conductor as compared to a copper conductor of identical cross-section, for the same electrical resistance, is
A 50 %
B 60 %
C 100 %
D 150 %
Resistance of an electrical conductor is proportional to its (where, L = length and A = cross-sectional area of the conductor)
A A
B L
C A2
D Both A & B
x varies inversely as square of y. Given that y=2 for x=1. The value of x for y=6 will be equal is-
A 3
B 9
C 1/5
D 1/9
The illumination of a bulb varies inversely as the square of the distance . If the illumination is 6 lux at a distance of 5 meters whet is illumination at a distance of 3 meters?
A 24
B 12
C 6
D 48
The impedance of an RL circuit varies inversely with frequency.
A True
B False
If the time required to complete a definite fraction of reaction varies inversely as the concentration of the reactants, then the order of reaction is
A 0
B 1
C 2
D 3
In continuous filtration (at a constant pressure drop), filtrate flow rate varies inversely as the
A Square root of the velocity
B Square of the viscosity
C Filtration time only
D Washing time only
Total peripheral resistance is inversely proportional to
A Cross sectional area of blood vessels
B Radius of blood vessels
C Velocity of blood flow
D Viscosity of blood
E Length of blood vessels
If A varies directly proportional to C and B also varies directly proportional to C, which one of the following is not correct ?
A $$\left( {A + B} \right)\alpha \,C$$
B $$\left( {A - B} \right)\alpha \,\frac{1}{C}$$
C $$\sqrt {AB} \,\alpha \,C$$
D $$\frac{A}{B} = {\text{constant}}$$
Which of the following is a good conductor of heat but bad conductor of electricity ?
A Asbestos
B Celluloid
C Straw Board
D Mica

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