Tag Archives: Quiz
$f(x)=\sqrt {\frac {\sin x + \sin 2x}{1+\cos x + \cos 2x}}$
Speed of Light Symbol Short Quiz
Why does the symbol c usually represent speed of light in vacuum? Choose the best possible option.
(A) Einstein used the symbol c first time in his equation $\displaystyle E=m{{c}^{2}}$
(B) Einstein used the symbol c first time in his equation $\displaystyle m=\frac{{{m}_{0}}}{\sqrt{1-\frac{{{v}^{2}}}{{{c}^{2}}}}}$
(C) c is the initial letter of the word celeritas, the Latin word meaning speed
(D) c is the initial letter of the word calculus
High Temperature in a Fusion Lab Quiz
A nuclear fusion lab requires very high temperature for the fusion reaction to take place. Mr X says, “The temperature at Sun’s surface is around 6000 K. We can use advanced lenses/mirrors to focus Sun’s rays and get temperature much higher than 6000 K. Mr Y disagrees. Who is right?
(A) Mr X
(B) Mr Y
(C) Information is insufficient to answer
Rolling Motion Quiz
Match the following (multiple matches are possible) in the context of rolling motion:
| Column I | Column II |
| (A) Angular Momentum = $\displaystyle M{{{\vec{r}}}_{CM}}\times {{{\vec{v}}}_{CM}}+{{I}_{CM}}\overrightarrow{\omega }$ (B) Kinetic Energy = $\displaystyle \frac{1}{2}Mv_{CM}^{2}+\frac{1}{2}{{I}_{CM}}{{\omega }^{2}}$ (C) Kinetic Energy = $\displaystyle \frac{1}{2}{{I}_{\text{Point of Contact}}}{{\omega }^{2}}$ (D) vcm=Rω |
(p) Pure rolling (q) Rolling (r) Pure rotation about the point of contact |
