II and IV
I and II
I and III
II and III
Correct answer is A
No explanation has been provided for this answer.
A quantity which requires magnitude and direction to be specified is
Temperature
Distance
Displacement
Mass
Correct answer is C
Displacement is a vector quantity
What is the least possible error encountered when taking measurement with a meter rule?
0.1mm
1.0mm
0.5mm
0.2mm
Correct answer is C
No explanation has been provided for this answer.
\( \frac{\pi x^2}{8} \)
\( \frac{3\pi x^2}{8} \)
\( \frac{5\pi x^2}{8} \)
\( \frac{3\pi x}{8} \)
Correct answer is B
A = θ 360 x πr2 = 135 360 x π x x2 = (3πx2)/8
1.32 x \(10^{-6}\)m
2.98 x \(10^{-6}\)m
3.32 x \(10^{-6}\)m
6.82 x \(10^{-6}\)m
8.01 x \(10^{-6}\)m
Correct answer is A
\(E=\lambda v=\frac{hc}{\lambda}\Rightarrow\lambda=\frac{hc}{E}={6.6 \times10^{-34}\times3\times10^8}{1.5\times10^{-19}}\\=1.32\times10^{-6}\)