# Physics 2017 Past Questions | JAMB

Study the following Physics past questions and answers for JAMBWAEC  NECO and Post-JAMB. Get prepared with official past questions and answers for upcoming examinations.

41. What is the cost of running seven 40 W lamps and five 80 W la mps for 12 hours of the electrical energy cost N7.00kWk?

• A. N80.00
• B. N45.36
• C. N65.00
• D. N57.12

42.

From the diagram above, calculate the total current in the circuit
• A. 5.0A
• B. 3.7A
• C. 4.5A
• D. 4.0A

43. Calculate the time taken for a mango fruit that fall from the tree 20 m to the ground [g = 10 ms-2]

• A. 10s
• B. 5s
• C. 4s
• D. 2s

44. Which of the following is not a mechanical wave?

• A. wave in closed pipe
• B. radio waves
• C. water waves
• D. sound waves

45.  The velocity ratio of an inclined plane where angle of inclination in θ is

• A. Sinθ
• B. Cosθ
• C. Tanθ
• D.  $\frac{1 /}{\mathrm{sin}\theta }$

46. The volume of a fixed mass of gas is 10cm3 when its pressure is 400cmHg. Determine the volume of the gas when its pressure is 200cmHg.

• A. 30cm3
• B. 40cm3
• C. 50cm3
• D. 20cm3

47.  Which of the following representations is correct for an atom X with 28 electrons and 30 neutrons?

• A. $$^{58}_{28}X$$
• B. $$^{30}_{28}X$$
• C. $$^{28}_{30}X$$
• D. $$^{58}_{30}X$$

48. Which of the following is true of an electrical charge?

• A. Positive charge means deficit electrons
• B. Negative charge means excess of electrons
• C. electric current means movement of electrons
• D. All of the above

49. A man of mass 50kg ascends a flight of stains 5m high in 5 seconds. If acceleration due to gravity is 10ms2${}^{-2}$ the power expended is

• A. 100w
• B. 200w
• C. 400w
• D. 500w

50.   Calculate the angle of minimum deviation of a 60o prism of a refractive index [sin-10.75 = 49o]

• A. 38.00o
• B. 19.47o
• C. 16.25o
• D. 49o

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