0.75cm
4.00cm
8.00cm
12.00cm
Correct answer is D
\(\frac{\text {object height}}{\text{image height}}\) = \(\frac{\text {object distance}}{\text{image distance}}\)
\(\frac{3}{\text{image height}}\) = \(\frac{10}{40}\)
Image height = 12cm
Shadows and eclipses result from the
refraction of light
rectilinear propagation of light
defraction of light
reflection of light
Correct answer is B
No explanation has been provided for this answer.
both the frequency of the wave and the wavelength are decreased
the frequency of the wave is decreased while the wavelength is increased
the frequency of the wave is unaltered while the wavelength is decreased
the frequency of the wave is decreased while the wavelength is unaltered
Correct answer is C
No explanation has been provided for this answer.
4.5 x 10-7m
6.0 x 10-7m
1.7 x 106m
2.2 x 106m
Correct answer is A
\(\frac{1}{4}\) = \(\frac{3 \times 10}{v}\)
v = 2.25 x 108ms-1
\(\lambda\) = \(\frac{V}{F}\)
= \(\frac{2.25 \times 10^8}{5 \times 10^14}\)
\(\lambda\) = 0.45 x 10-6m
i and ii only
i and iii only
i and iii only
i, ii, and iii
Correct answer is A
Real-life examples of convection: