What must be connected between the points P and Q to establish a steady current through the incomplete circuit diagram given?
- A. Fuse
- B. ammeter
- C. Cell
- D. voltmeter
The angle which the direction of the earth magnetic field makes with the horizontal at a palace is know as.
- A. angle of contact
- B. angle of dip
- C. angle of declination
- D. magnetic meridian
The mass of the earth is 6.0 x 1024kg and that of the moon is 7.0 x 1022kg. If the distance between them is 4.0 x 108m, calculate the force of attraction between them. [G = 6.7 x 10-11Nm2kg-2]
- A. 1.8 x 105N
- B. 1.8 x 1010N
- C. 1.8 x 1015N
- D. 1.8 x 1020N
A battery of emf 24V is connected to three resistor P, Q and R as illustrated in the given diagram. Determine the voltage across the resistor Q.
- A. 5V
- B. 10V
- C. 14V
- D. 24V
A wire of cross-sectional area 0.60mm2 has a restivity of 7.2 x 10-7 \(\Omega\). Calculate the length of wire that will have a resistance of 3\(\Omega\).
- A. 0.25m
- B. 2.50m
- C. 3.60m
- D. 36.00
The symbol illustrated above is that of a resistor?
- A. which absorb light
- B. which emits light
- C. which absorbs heat to function properly
- D. whose resistance is light dependent
Which of the following statements about a three-pin plug is/are correct. i. The brown wire is the live wire. ii. The fuse is connected to the live wire. iii. The earth wire is coloured blue
- A. i only
- B. ii only
- C. i and ii only
- D. i, ii and iii
Which of the following statements is correct? When capacitors of different values are connected in series
- A. the same charge flows through them
- B. the same voltage appears across each capacitor
- C. different quantities of charges flow through them in different voltages across them
- D. different quantities of charges flows through them with the same voltage across them
An electric generator rated 12 kW, 2 kV distribute power through a cable of resistance 20\(\Omega\). Calculate the power loss in the cable.
- A. 120 w
- B. 360 w
- C. 720 w
- D. 2400 w
An alternating current supply is connected to an electric lamp which lights with the same brightness as it does with direct current source emf 6v. The peak potential difference of the a.c supply is
- A. 4.6v
- B. 6.0v
- C. 8.5v
- D. 12.0v
The diagram given illustrates two charged particles W and X. The charges on W and x are respectively
- A. negative; negative
- B. negative; positive
- C. positive; positive
- D. positive; negative
All electromagnetic waves in a vacuum have the same
- A. wavelength
- B. frequency
- C. speed
- D. amplitude
An object is placed 20cm from a concave mirror of focal length 15cm. Calculate the linear magnification of the image formed
- A. 0.5
- B. 1.5
- C. 2.0
- D. 3.0
Red light travels faster than blue light when both of them pass through a glass prism because the
- A. refractive index of red light is grester than that of blue light
- B. refractive index of blue light is greater than that of red light
- C. red light is more intense than the blue light
- D. blue light is more intense than the red light
A girl standing some distance from the cliff claps her hands and hears the echo 0.8s later. calculate her distance from the cliff. [speed of sound in air = 320 ms-1]
- A. 23m
- B. 128m
- C. 288m
- D. 298m
When an air column is set into vibrations, the distance between two consecutive nodes of the resultant wave is
- A. one quarter of the wavelength
- B. half of the wavelength
- C. the wavelength
- D. twice the wavelength
A swimming pool is 2.1m deep. If it contains water of refractive index 1.3, calculate the apparent depth of pool
- A. 3.4m
- B. 2.7m
- C. 1.6m
- D. 0.8m
An object is placed 15cm from a diverging lens of focal length 12cm. The image of the object formed by the lens in
- A. real and 6.67cm from the lens
- B. virtual and 6.67cm from the lens
- C. real and 60.00cm from the lens
- D. virtual and 60.00cm from the lens
What type of wave is emitted by a loud speaker?
- A. Transverse
- B. Longitudinal
- C. Gamma
- D. Radio
The diagram given illustrates a wave form. Determine the speed of the wave
- A. 5.4 ms-1
- B. 8.4 ms-1
- C. 9.6 ms-1
- D. 10.0 ms-1
The pressure applied to an enclosed fluid to one end id transmitted equally throughout the fluid and to the container walls. This statement is
- A. Archimede's principle
- B. Bernoulli's principle
- C. Pascal's principle Heisenberg's
- D. Heisenberg's uncertainty principle