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
Q. Magnification is -
1) actual size of specimen/ observed size
2) observed size of specimen/ actual size
3) actual size of specimen - observed size
4) actual size of specimen x observed size
Q. Which one of the following is active transport?
1) It is the movement of a substance against a diffusion gradient with the use of energy from respiration.
2) It is the movement of a substance against a diffusion gradient without the use of energy.
3) It is the movement of a substance against a diffusion gradient with the use of energy from photosynthesis.
4) IT is the movement of a substance along a diffusion gradient with the use of energy from respiration.
Q. Rutherford's alpha-particle scattering experiment on thin gold foil was responsible for the discovery of -
1) electron
2) proton
3) atomic nucleus
4) neutron
Q. The rate of evaporation of liquid does not depend upon -
1) temperature
2) its surface are exposed to the atmosphere
3) Its mass
4) humidity
Q. Bose-Einstein Condensate is -
1) solid state of matter
2) fifth state of matter
3) plasma
4) state of condensed matter
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