JEE Main Test 1...

The angle between the lines √3x - y - 2 = 0 and x - √3y + 1 = 0 is

The equation of bisectors of the angles between the lines |x| = |y| are

The density of O₂ is 16 at NTP. At what temperature its density will be 14 ? Consider that the pressure remains constant, at

Graham's law deals with the relation between

The location for the l₁x + m₁y + n₁ = 0 to be conjugate with respect to the circle x² + y² = r², is

If I denotes the semi - latusrectum of the parabola y² = 4ax and SP and SQ denote the segments of any focal chord PQ, S being the focus, then SP, I and SQ are in the relation

A mixture of light, consisting of wavelength 590 nm and an unknown wavelength, illuminates Young's double slit and gives rise to two overlapping interference patterns on the screen. The central maximum of both lights coincide. Further, it is observed that the third bright fringe of known light coincides with the 4th bright fringe of the unknown light. From this data, the wavelength of the unknown light is

In Young's double slit experiment with sodium vapour lamp of wavelength 589 run and the slits 0.589 mm apart, the half angular width of the central maximum is

If the bond dissociation energies of XY, X₂ and Y₂ (all diatomic molecules) are in the ratio of 1:1:0.5 and ∆H_f for the formation of XY is -200 kJ mol^-1 . The bond dissociation energy of X₂ will be

Consider the following Ellingham's diagram for carbon.