Physics 2nd Paper MCQ-Dhaka Board-2017

1. Which graph expresses the relationship of magnetic fux and electric flow?

2. Which is a medium ray?

3. A photon with wavelength $6630 \AA$ is incident on a sodium plate. Its threshold wavelength is $6800 \AA$, and Planck's constant is $\mathrm{h}=6.63 \times 10^{-34} \mathrm{~J}-\mathrm{s}$.

What is the electromotive force of sodium?

4. What is the refractive index of kerosene? Given, $C_{0}=3 \times 10^{8} \mathrm{~m} . \mathrm{s}^{-1}$ and $C_{t}=2.08 \times 10^{8} \mathrm{~m}_{\mathrm{s}} \mathrm{s}^{-1}$

5. What is the total resistance?