Interference pattern can be observed due to superposition of the following waves:
A. $$y=a \sin \omega t$$
B. $$y=a \sin 2 \omega t$$
C. $$y=a \sin (\omega t-\phi)$$
D. $$y=a \sin 3 \omega t$$
Choose the correct answer from the options given below.
If $$\phi$$ is the work function of photosensitive material in $$\mathrm{eV}$$ and light of wavelength of numerical value $$\lambda=\frac{h c}{e}$$ metre, is incident on it with energy above its threshold value at an instant then the maximum kinetic energy of the photo-electron ejected by it at that instant (Take $$h$$-Plank's constant, $$c$$-velocity of light in free space) is (in SI units):
The electromagnetic radiation which has the smallest wavelength are
The equilibrium state of a thermodynamic system is described by
A. Pressure
B. Total heat
C. Temperature
D. Volume
E. Work done
Choose the most appropriate answer from the options given below.