conductance
inductance
capacitance
resistance
Correct answer is C
No explanation has been provided for this answer.
In which of the following media is the transmission of sound wave fastest?
Vacuum
Air
Wood
Iron
Correct answer is D
No explanation has been provided for this answer.
0o and 60o
90o and 30o
0o and 30o
90o and 60o
Correct answer is D
No explanation has been provided for this answer.
Which of the following optical instruments does not depend on the use of plane mirrors?
kaleidoscope
simple microscope
sextant
simple periscope
Correct answer is B
No explanation has been provided for this answer.
4.33 x 108ms-1
4.00 x 108ms-1
2.25 x 108ms-1
1.33 x 108ms-1
Correct answer is C
\(_an_w = \frac{4}{3} = \frac{\text{speed of light in air}}{\text{speed of light in water}}\)
\(\frac{4}{3} = \frac{3 \times 10^8}{x}\)
x = \(\frac{9 \times 10^4}{4}\)
= 2.25 x 108m/s