Physics 2nd Paper MCQ-Rajshahi Board-2022

1. What type of change is coming in the breath of the fringe when distance between slits becomes half and distance between slit to screen three times in Young's double slits experiment?

2. What is the value of rydberg constant?

3. For keeping unchanged the volume if some heat provide in a gas then in this gas -

i. increase pressure

ii. increase kinetic energy

iii. increase temperature

Which one is correct?

4. The lengths of two conductive wires made of same material are $3 \mathrm{~m}$ and $6 \mathrm{~m}$ respectively and radius are $1 \mathrm{~cm}$ and $0.5 \mathrm{~cm}$ respectively. What is the ratio of specific resistance of these wires?

5. Which one is the change of entropy from higher temperature $T_{1}$ to lower temperature $T_{2}$ of an object of mass ' $m$ ' and specific heat ' $s$ '?