## 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.

1. Which is the incorrect formula for a body accelerating uniformly?

• A. a = v2 − $$\frac{u^2}{2}$$
• B. v2 = u2 + 2as
• C. s = ut + $$\frac{1}{2}$$ at2
• D. v2 − u2= 2as

2. Which of the following is not an electromagnetic radiation?

• A. x – ray
• C. sunlight
• D. sound waves

3. Calculate the electric field intensity between two plates of potential difference 6.5V when separated by a distance of 35cm.

• A. 18.57NC$$^{-1}$$
• B. 53.06N C$$^{-1}$$
• C. 2.28NC$$^{-1}$$
• D. 0.80NC$$^{-1}$$

4. Why do soldiers march disorderly while crossing a bridge?

• A. To prevent resonance on the bridge
• B. To set the bridge into resonance
• C. To make the b ridge collapse
• D. To spread their weight evenly on the bridge

5.

Calculate the upthrust on an object of volume 50cm3 which is immersed in liquid of density 103kgm-3 [g = 10ms-2]

• A. 0.8N
• B. 2.5N
• C. 0.5N
• D. 1.0N

6.  Under what conditions are cathode rays produced in a discharge tube?

• A. High pressure and low voltage
• B. High pressure and high voltage
• C. Low pressure and low voltage
• D. Low pressure and high volatge

7. Under which of the following conditions is workdone

• A. A man supports a heavy food above his head with his hands
• B. A boy climbs onto a table
• C. A man pushes unto a table
• D. A woman holds a pot of water

8. Calculate the specific latent heat of vaporization of steam of 1.13 x 106J of heat energy is required to convert 15kg of steam to water.

• A. 7.53 x 105 Jkg$$^{-1}$$
• B. 7.53 x 10-2Jkg$$^{-1}$$
• C. $$7.53 \times 10^{4}$$Jkg$$^{-1}$$
• D. 7.53 x 10-3Jkg$$^{-1}$$

9. A cell of internal resistance 2 π supplies current to a 6 π resistor. The efficiency of the cell is

• A. 12.0%
• B. 25.0%
• C. 33.3%
• D. 75.0%

10. Which of the following statements is NOT correct?

• A. Molecules of a liquid are stationary
• B. Brownian motion is an evidence of particle nature of matter
• C. Matter is made up of molecules
• D. The molecules of matter are in constant motion
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