If $$c$$ is the velocity of light in free space, the correct statements about photon among the following are:
A. The energy of a photon is $$E=h v$$.
B. The velocity of a photon is $$c$$.
C. The momentum of a photon, $$p=\frac{h v}{c}$$.
D. In a photon-electron collision, both total energy and total momentum are conserved.
E. Photon possesses positive charge.
Choose the correct answer from the options given below:
At any instant of time $$t$$, the displacement of any particle is given by $$2 t-1$$ ($$\mathrm{SI}$$ unit) under the influence of force of $$5 \mathrm{~N}$$. The value of instantaneous power is (in $$\mathrm{SI}$$ unit):
A light ray enters through a right angled prism at point $$P$$ with the angle of incidence $$30^{\circ}$$ as shown in figure. It travels through the prism parallel to its base $$B C$$ and emerges along the face $$A C$$. The refractive index of the prism is:
In the following circuit, the equivalent capacitance between terminal A and terminal B is :