1. What is the forces on segment of wire that is 0.5m long, and has a current of 2A, when placed in a magnetic field of 2T at an angle of 30^o to the field

A. 1.0N
B. 2.0N
C. 0.1N
D. 0.2N

2. The mode of heat transfer that is electromagnetic in nature,

A. Conduction
B. Evaporation
C. Convection
D. Radiation

3. The condition for resonance to occur in RLC series circuit is

A. When the angular frequency of the applied voltage is equal to the natural angular frequency of the circuit
B. When the angular frequency of the apply voltage is greater than the natural angular frequency of the circuit
C. When the angular of the apply voltage is less than the natural angular frequency of the circuit.
D. When the angular frequency of the applied voltage is zero.

4. A solid weighs 10.5N in air and 5.5N when immersed in a liquid of density 900kgm^-3.sCalculate the volume of the solid.[g=10m/s²].

A. 1.17×10^-4m³
B. 5.56×10^-4m³
C. 3.24×10^-4m³
D. 2.24×10^-4m³

5. A uniform metre rule AB balanced on a knife edge 60cm from end B when a load of 22g is kept 10cm away from the end A, what is the weight of the meter rule

A. 40g
B. 55g
C. 66g
D. 37g

6. A particle in simple harmonic motion while passing through means position will have

A. Minimum kinetic energy and maximum potential energy
B. Maximum potential energy and minimum kinetic energy
C. Minimum kinetic energy and minimum potential energy
D. Maximum kinetic energy and minimum kinetic energy

7. A pin floats on water due to the phenomenon of

A. Viscosity in fluid
B. Surface tension
C. Capillary tension
D. Gravitation

8. I. it convert electrical energy into a mechanical energy II. It generate electricity III. It is based on the principle of electromagnetic induction IV. Its follows Eleming,s left hand rule Which of the statements above is or are true for electric motor

A. I only
B. I and II only
C. I, II, and III only
D. I and IV only

9. A thick glass tumbler cracks when hot water is poured into it because

A. Anomalous expansions of water
B. Uneven expansion of the glass tumbler
C. Thermal expansion of water
D. Even expansion of the glass tumbler

10. Which of the following is the function of p.n. junction diode of s semiconductor device

A. it can be used to convert alternating current AC to direct current DC
B. it can be used to convert direct current DC to Alternating current
C. it can be used to amplify the electric current in a circuit
D. it can be used to step down the electric current in a circuit

11. Which of the following is true of a particle in stable equilibrium

A. Potential energy is constant
B. Potential energy is maximum
C. Potentials energy is minimum
D. Potential energy is zero

12. Determine the equivalent capacitance of the capacitor shown in the circuit.

A. 1.20uF
B. 6.00uF
C. 0.55uF
D. 1.33uF

13. The power factor of series R.L.C. circuit at resonance is

A. 0
B. 1
C. π
D. π/2

14. In the given circuit, what is the ammeter reading given that the voltage across the capacitor and inductor are 300 volts each

A. 1.2A
B. 2.2A
C. 3.2A
D. 0.2A

15. One of these is not a mechanical wave

A. Sound wave
B. Water wave
C. Light wave
D. Seismic wave

16. Which of the following is a scalar quantity

A. Electric potential
B. Electric field
C. Angular momentum
D. Linear momentum

17. Given three capacitor each of capacitance C. the resultant capacitance of 2C/3 Can be obtained by

A. Combining all in parallel
B. All in series
C. Two of them in series and in parallel with the third
D. Two in parallel and third in series with this combination

18. If two plane mirror are positioned side by side, the number of image formed is 8. At what angled are they positioned

A. 30^o
B. 40^o
C. 60^o
D. 90^o

19. If the half life of a particle is 4.5 days. How long will it decay ¾ of its original mass

A. 9 days
B. 12 days
C. 15 days
D. 21 days

20. A transformer core is laminated to reduced

A. Hysteresis
B. Copper loss
C. Eddy current loss
D. Stray and di electric losses

21. A glass rod is charged when rubbed with silk cloth because

A. Its transferred negative charge
B. Its transfer positive charges
C. Its accepts negative charges
D. Decrees the number of free electrons

22. Addition of trivalent impurity to semiconductor

A. Increase the number of hole
B. Decrease the number of holes
C. Increase the number of free electrons
D. Decrease the number of free electrons

23. A charge of magnitude 1.6×10–19 C is placed in a uniformed electric field of intensity 1,200v/m. calculate its acceleration if the mass the mass of the charge is 9.1×10^-31kg

A. 2.11×10¹²ms²
B. 2.11×10¹⁴ms²
C. 6.83×10¹²ms²
D. 6.83×10¹⁴ms²

24. The defeat of the eye lens which occurs when the ciliary muscles are weak is called

A. Long sightedness
B. Short sightedness
C. Presbyopia
D. Astigmatism

25. A light of 6.22eV is incident on a cadmium surface. If a stopping voltage of 2.1eV is required to reduced the photocurrent to zero. Calculate the work function of the cadium

A. 4.07eV
B. 2.15ev
C. 6.22ev
D. 8.37ev

26. The fundamental frequency of an open organ pipe is the same as that of the cond overturn of a closed organ pipe of length 0.2m. what is the length of the open organ pipe

A. 0.132m
B. 0.160m
C. 0.125m
D. 0.080m

27. What is the maximum possible wavelength in an open organ pipe of length a cm

A. a cm
B. 2a cm
C. 3a cm
D. 4a cm

Mercury is used as a thermometric substance because I. its specific heat is low II. Does not wet glass III. It is opaque

A. I only
B. I and II only
C. II and III only
D. I,II And III

29. The magnetic field inside a solenoid is

A. Non uniform
B. Uniform
C. Zero
D. Weak

30. A gun with muzzle velocity of 500m/s shoots a bullet at bird 50m away. To hit the target the gun should be aimed take g= 10m/s2

A.
B.
C.
D.

31. If the distance between two suspended masses 50kg each is quadrupled the gravitational force of attraction between them is

A. Reduced by four
B. Increased by four
C. Increased by sixteen
D. Reduced by sixteen

32. In a simple machine, the variation of the efficiency with load is

A. A parabola
B. Straight line
C. A hyperbola
D. Logarithmic

33. Binding energy is

A. The amount of energy released when proton change energy level
B. The amount of energy released when electrons changed energy level
C. The amount of energy required to break a nucleus apart into proton and neutrons
D. The amount of energy required to break a nucleus apart into proton and electrons

34. If the heat capacity of a 100g of a substance is 300Jk, what would be the heat capacity of 10g of the substance

A. 30 Jk^-1
B. 300 Jk^-1
C. 30,000 Jk^-1
D. 3 Jk^-1

35. Wooden ladies are commonly used domestically to scoup hot soup because of its

A. Good insulation of the electricity
B. Good insulation of heat and electricity
C. Bad conduction of heat and electricity
D. Good insulation of heat

36. Which of these thermometer used the volume of a fixed mass of liquid as its thermometric property

A. Mercury in gas thermometer
B. Thermos couple thermometer
C. Constants volume of gas thermometer
D. Resistance thermometer

37. As pressure is increased

A. the melted point of the ice decreased
B. the melting point of the ice increased
C. the boiling point of the increases
D. no changed is observed in the melting point of ice or the boiling point of water

38. Which of the following statement is true about the gramma ray are or is true I. It carries negative charges II. It can be deflected by both magnetic and electric field III. It can be stop by a sheet of paper IV. It has zero rest mass and neutral charge.

A. I only
B. I and II only
C. II and IV only
D. IV only

39. A cyclist of mass 30kg exerts a force of 250N to move his bicycle. The acceleration produce is 4m/s2. What is the frictional force between the road and the tires .

A. 200N
B. 120N
C. 130N
D. 180N

40. The temperature of land rises more quickly than that of the sea because the specific heat of the soil is

A. More than that of water
B. Less than that of water
C. Equal to that of water
D. Negligible

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