2.0x102Hz
4.5x103Hz
2.0x103Hz
4.5x102Hz
Correct answer is C
Wavelength = 15cm = 0.15m Velocity = 300m/s V = fx F = V/Wavelength F = 300/0.15 Hertz F = 2 x 103Hz
A rectangular metal block of volume 10-6m3 at 273k is heated to 573k. If its coefficient of linear e...
Calculate the critical angle for light traveling from water to air. (Refractive index of water = 1.3...
When taking a penalty kick, a footballer applies a force of 30.0N for a period of 0.05s. if the mass...
The motion of the prongs of a sounding turning fork is ...
A vapour whose molecules are in dynamic equilibrium with those of its own liquid is said to be ...
The gravitational field intensity at a location X, in space, is two-fifths of its value on the earth...
A given mass of an ideal gas has a pressure of 500Nm-2 at -13oC. If its volume remains constant. Cal...
The strength of an electromagnet increases with ...
Which of the following has the lowest internal resistance when new? ...
Which of the following has the highest surface tension? ...
Quantitative Reasoning Questions and Answers
Typing Speed and Accuracy Test
Situational Judgement Questions and Answers
Microsoft Office Questions and Answers
Puzzles Questions and Answers
Abstract Reasoning Questions and Answers
Data Interpretation Questions and Answers
Numerical Reasoning Questions and Answers
Nigeria General Knowledge Questions and Answers
Logical Reasoning Questions and Answers
Spatial Reasoning Questions and Answers
Personality Test
Verbal Reasoning Questions and Answers
See all →