Physics 1st Paper MCQ-Rajshahi Board-2019

1. How many times more is the Boltzmann constant in C.G.S unit than SI unit?

2. Difference in the reading of two thermometers in humidity measuring instrument-

i. if decreases suddenly there is a probability of storm

ii. if decreases slowly then there is probability of rain

iii. if becomes very small then it is the probability of dry weather

Which one is correct?

3. A body is thrown from the top of a tower of $180 \mathrm{~m}$ height. At the same time another body is thrown vertically upward with velocity of $60 \mathrm{~ms}^{-1}$.

4. If a elastic collision will occur between two bodies then -

i. the total momentum will remain the same before and after collision

ii. the total kinetic energy will remain the same before and after collision

iii. the two velocities will be exchanged after collision.

Which one of the following is correct?

5. What is the linear velocity of the terminal point of minute-hand whose length is $0.01 \mathrm{~m}$ ?