The thermometric property of a constant volume thermometer is?
- A. change in volume
- B. differential expanssion
- C. change in pressure
- D. change in length
If the relative density of gold is 19.2, the volume of 2.4kg of gold is?
- A. 8.00 x 10-3 m3
- B. 1.25 x 10-4 m3
- C. 1.92 x 10-4 m3
- D. 4.61 x 10-3 m3
At low humidity in an environment, the human skin is usually?
- A. damp and rough
- B. damp and smooth
- C. dry and rough
- D. dry and smooth
A uniform solid cube material 10cm on each side of mass 700g is submerged in water. which of the following best described the behavior of the cube water?
- A. the cube will melt after a period of time
- B. the cube will float
- C. the cube will sink in water
- D. the cube will rest at an equilibrium position in water
The resistance of a piece of wire of length 20m has crossed-sectional area 8 x 10\(^{-6}\)m\(^2\)is?
[Resistivity of the wire = 4 x 10\(^{-7}\) Ω m]
- A. 5.0 Ω
- B. 0.5 Ω
- C. 10.0 Ω
- D. 1.0 Ω
Two charged particles are projected into a region where there is a magnetic field perpendicular to their velocities. if the charges are deflected in opposite directions, which of the following statements is true of the charge?
- A. the charge must be of opposite sign
- B. positive charges are more in number
- C. the charges are electrically neutral
- D. the charges are of the same sign
The electric field intensity in a place where a charge of 10-10c experiences a force of 0.4N is?
- A. 4.0 x 107 NC-1
- B. 8.0 x 109 NC-1
- C. 8.O x 10-12 NC-1
- D. 4.0 x 109 NC-1
A car battery rated 45 A H is charged with a charger whose rating is 2.5A.How long will it take to charge the battery full?
- A. 10 hrs
- B. 18 hrs
- C. 20 hrs
- D. 25 hrs
The north pole of a magnet can never be separated from the south pole because of the property knowledge as?
- A. magnetic octopole
- B. magnetic monopole
- C. magnetic dipole
- D. magnetic quadrupole
An electric device is rated 2000 W, 250 v. The correct fuse rating of the device is?
- A. 9 A
- B. 8 A
- C. 6 A
- D. 7 A
Satellite communication network makes use of?
- A. visible light
- B. sound wave
- C. radio wave
- D. infra-red wave
When very hot water is poured into two identical thin and thick glass tumblers in equal volumes, the thick one cracks because?
- A. of the even expansion of glass
- B. glass is a crystal
- C. glass is a good conductor of heat
- D. of the uneven expansion of gass
I. Melting
II. Boiling
III. Refraction
IV. Conduction
Which combination of the above is evident of the molecular nature of matter?
- A. II , III and IV only
- B. I ,II and IV only
- C. I , III and IV only
- D. I , II and III only
The process whereby a liquid turns spontaneously into vapour is called?
- A. regelation
- B. sublimation
- C. boiling
- D. evaporation
I. reproducibility
II. Sensibility
III. High terminal capacity
iv. High accuracy
The quantities of a good thermometer include?
- A. I, II and IV only
- B. I, III and IV only
- C. I, II and III only
- D. II, III and IV only
The process whereby the molecules of different substances move randomly is called?
- A. capillarity
- B. surface tension
- C. osmosis
- D. diffusion
A body of mass 36kg falls through a viscous liquid which offers a drag force of 260N on the body. The upthrust on the body at terminal velocity is?
[g = 10ms2]
- A. 100N
- B. 620N
- C. 50N
- D. 310N
A 3m3 volume of liquid W of density 200kgm3 is mixed with another liquid L of volume 7m3 and density 150kgm-3. the density of mixture is?
- A. 165kgm-3
- B. 100kgm-3
- C. 265kgm-3
- D. 350kgm-3
When the temperature difference between the wet and dry bulbs of a hygrometer is high, this indicates that
- A. it is about to rain
- B. the relative humidity is high
- C. there is plenty of sunshine
- D. the relative humidity is low
which of the following materials is a conductor?
- A. Glass
- B. Wax
- C. Sodium
- D. Plastic
The current in a reverse-biased junction is due to?
- A. minority carriers
- B. electrons
- C. majority carriers
- D. holes