Myopic defects in the human eye can be corrected through the use of a?

5 years ago

A. Concave Mirror B. Concave lens C. Prism D. Convex lens Correct Answer: Option B - Concave lens

Which of the following is true of an electrical charge ______?

5 years ago

A. Positive charge means deficit electrons B. Negative charge means excess of electrons C. electric current means movement of electrons…

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.

5 years ago

A. 30cm³ B. 40cm³ C. 50cm³ D. 20cm³ Correct Answer: Option D - 20cm³ Explanation Using boyle's law P1V1 =…

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

5 years ago

A. Sinθ B. Cosθ C. Tanθ D. 1/sinθ Correct Answer: Option D - 1/sinθ

Which of the following is not a mechanical wave _______?

5 years ago

A. wave in closed pipe B. radio waves C. water waves D. sound waves Correct Answer: Option B - radio…

From the diagram below; calculate the total current in the circuit?

5 years ago

A. 5.0A B. 3.7A C. 4.5A D. 4.0A Correct Answer: Option B Explanation V = IR from ohms law I…

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

5 years ago

A. N80.00 B. N45.36 C. N65.00 D. N57.12 Correct Answer: Option D - N57.12 Explanation Seven 40W lamps = 7…

If silicon is doped with phosphorus; what type of semiconductor material will be formed?

5 years ago

A. Zener material B. P-n junction C. n-type D. p-type Correct Answer: Option C = n-type Explanation When silicon is…

When two mirrors are placed at an angle of 90° to each other; how many images will be formed when an object is placed in front of the mirrors?

5 years ago

A. 5 B. 4 C. 3 D. 2 Correct Answer: Option C - 3 Explanation When two mirrors are inclined…

The action of blotting paper on ink is due to?

5 years ago

A. diffusion B. osmosis C. capillarity D. surface tension Correct Answer: Option C - capillarity Explanation Capillarity is the tendency…