Physics 1st Paper MCQ-Jessore Board-2017

1. A particle's harmonic motion equation is - $x=10 \sin (6 \pi t+3 \pi)$. What is the frequency?

2. The diagonals are $\overrightarrow{\mathrm{A}} \mathrm{C}=\hat{\mathrm{i}}$ and $\overrightarrow{\mathrm{BD}}=\hat{\mathbf{j}}$. $\vec{A} B$ vector's right form is-?

3. An object is thrown at $60^{\circ}$ with horizontal and at $10 \mathrm{~ms}^{-1}$ velocity. What is the horizontal velocity?

4. Accuracy of measurement is related with?

i. Error

ii. Apparatus

iii. Mistakes

Which of the following is correct?

5. For which intermediary angle of force and displacement there will be work done by the force?