Q. 'Light-year' is a unit of -
1) time
2) speed
3) distance
4) intensity of light
Q. Faraday constant -
1) depends on the amount of the electrolyte
2) depends on the current passed in the electrolyte
3) depends on the volume of the solvent in which the electrolyte is dissolved
4) is a universal constant
Q. On heating, the resistance of a semiconductor -
1) increases
2) decreases
3) remains same
4) first increases and then decreases
Q. The total resistance of a circuit having two parallel resistors is 1.403 kilo-ohm. If one of the resistors is 2.0 kilo-ohm, then the other resistor will be -
1) 1.403 kilo-ohm
2) 2.0 kilo-ohm
3) 3.403 kilo-ohm
4) 4.70 kilo-ohm
Q. People prefer to wear cotton clothes in summer season. This is due to the fact that cotton clothes are -
1) good absorbers of water
2) good conveyors of heat
3) good radiators of heat
4) good absorbers of heat
Q. The frequency (in Hz) of a note that is one octave higher than 500 Hz is -
1) 375
2) 750
3) 1000
4) 2000
Q. If the speed of a moving magnet inside a coil increases, the electric current in the coil -
1) increases
2) decreases
3) reverses
4) remains the same
Q. If an object is at rest, then the time (X-axix) versus distance (Y-axis) graph -
1) is vertical
2) is horizontal
3) has 450 positive slope
4) has 450 negative slope
Q. Rate of evaporation increases with -
1) an increase of surface area
2) an increase in humidity
3) a decrease in wind speed
4) a decrease of temperature
Q. The value of the slope of a normal demand curve is -
1) positive
2) negative
3) zero
4) infinity
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