Write a paragraph describing your reactions (likes or dislikes) about the zoo you have visited.
Write a paragraph making Small and big comparisons between the two cities of Nepal.
Distinguish between resistance and resistivity. Derive an expression for the effective resistance of a number of resistors connected in series and parallel.
An ammeter is always connected in series. Why?
The polarizing angle for a transparent medium is 60°. What is the refractive index of the medium?
What is a polarizing angle? Does polarizing angle depend on the light used?
A parallel beam of sodium light of wavelength 5.893×10^-7 m is incident normally on a diffraction grating. The angle between the two first-order spectra on either side of the normal is 28°. Find the number of ruling lines per mm on the grating.
What is the basic difference between interference and diffraction.
Describe what happens to the single-slit diffraction pattern when the width of the slit is less than the wavelength of the wave.
In Young's slit experiment, the separation of four bright fringes is 2.5 mm when the wavelength used is 6.2×10^-7 m. The distance from the slits to the screen is 0.80 m. Calculate the separation of the two slits.