Maths-
General
Easy
Question
Statement-I: 
Statement-II: If a>0, a>b, then 
- Statement I is true, statement II true, statement II is the correct explanation for statement II
- Statement I is true, statement II true, statement II is not the correct explanation for statement II
- Statement I is true, statement II is false
- Statement I is false, statement II is true
The correct answer is: Statement I is true, statement II true, statement II is the correct explanation for statement II
Put tan x 
S(II): 
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Chemistry-
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?
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?
Chemistry-General
Physics-
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
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Physics-General
Physics-
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 
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
Physics-General
Physics-
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
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Physics-General
Physics-
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
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Physics-General
Physics-
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, ……)
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, ……)
Physics-General
Physics-
Two point sources X and Y emit waves of same frequency and speed but Y lags in phase behind X by 2
l radian. If there is a maximum in direction D the distance XO using n as an integer is given by
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Physics-General
Physics-
Two ideal slits S1 and S2 are at a distance d apart, and illuminated by light of wavelength passing through an ideal source slit S placed on the line through S2 as shown. The distance between the planes of slits and the source slit is D. A screen is held at a distance D from the plane of the slits. The minimum value of d for which there is darkness at O is
Two ideal slits S1 and S2 are at a distance d apart, and illuminated by light of wavelength passing through an ideal source slit S placed on the line through S2 as shown. The distance between the planes of slits and the source slit is D. A screen is held at a distance D from the plane of the slits. The minimum value of d for which there is darkness at O is
Physics-General
Physics-
A monochromatic beam of light falls on YDSE apparatus at some angle (say ) as shown in figure. A thin sheet of glass is inserted in front of the lower slit S2. The central bright fringe (path difference = 0) will be obtained
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Physics-General
Chemistry-
Given 
The number of electrons present in l = 2 is
Given The number of electrons present in l = 2 is
Chemistry-General
