When one of the slits of Young’s experiment is covered with a transparent sheet of thickness 4.8 mm, the central fringe shifts to a position originally occupied by the 30^th bright fringe. What should be the thickness of the sheet if the central fringe has to shift to the position occupied by 20^th bright fringe

Figure here shows P and Q as two equally intense coherent sources emitting radiations of wavelength 20 m. The separation PQ is 5.0 m and phase of P is ahead of the phase of Q by 90^o. A, B and C are three distant points of observation equidistant from the mid-point of PQ. The intensity of radiations at A, B, C will bear the ratio

Represent -7 + 3 on number line

When we add something to the given number, we don’t start counting the second number from zero. We count the places from the number itself. Any negative value means we move in left direction. Any positive value means we move in right direction.

Statement-I:
Statement-II: If 0<a<b, then

Statement-I:
Statement-II: If a>0, a>b, then

Statement-I:
Statement-II: If a>b then

Statement-I:
Statement-II: If a<b then

I:
II: Which of the following is true

I:
II: Which of the following is true

I:
II Which of the following is true

The probability density plots of 1s and 2s orbitals are given in figure

The density of dots in region represents the probability density of finding electrons in the region. On the basis of above diagram which of the following statements is incor-rect?

In the set up shown in Fig the two slits, and are not equidistant from the slit S. The central fringe at O is then

In a Young’s double slit experimental arrangement shown here, if a mica sheet of thickness t and refractive index is placed in front of the slit then the path difference

Following figure shows sources and that emits light of wavelength in all directions. The sources are exactly in phase and are separated by a distance equal to If we start at the indicated start point and travel along path 1 and 2, the interference produce a maxima all along

Two coherent sources separated by distance d are radiating in phase having wavelength . A detector moves in a big circle around the two sources in the plane of the two sources. The angular position of n = 4 interference maxima is given as

A beam with wavelength falls on a stack of partially reflecting planes with separation d. The angle that the beam should make with the planes so that the beams reflected from successive planes may interfere constructively is (where n =1, 2, ……)