physics

The diagram above represents a transverse traveling wave. Which two points are 180° out of phase?

A. A and E B. B and D C. C and F D. D and H Correct Answer: Option D…

6 years ago

To obtain a virtual, erect and magnified image from a thin converging lens, an object must be placed?

A. between the focus and the lens B. at the focus C. between the focal length and twice the focal…

6 years ago

Which electrical device is illustrated below?

A. a.c. generator B. a.c. motor C. d.c. generator D. d.c. motor Correct Answer: Option C C. d.c. generator

6 years ago

Which of the following electromagnetic waves is most energetic?

A. Radio waves B. X-ray C. Gamma rays D. Ultra-violet rays Correct Answer: Option C C. Gamma rays Explanation The…

6 years ago

Frequency is measured in?

A. meter per second B. seconds C. hertz D. farad Correct Answer: Option C C. hertz Explanation The unit of…

6 years ago

The bob of a simple pendulum takes 8.0s to complete 10 oscillations. Determine the frequency of oscillation of the bob.

A. 0.125Hz B. 1.25Hz C. 7.50Hz D. 8.00Hz Correct Answer: Option B B. 1.25Hz Explanation 10 complete oscillations = 8.0s…

6 years ago

Which of the following factors does not increase the rate of evaporation of water in a lake?

A. Increase in the pressure of the atmosphere B. Rise in temperature C. Increase in the surface area of the…

6 years ago