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Which element is expected to have lowest first ionisation energy (a) Sr (b) As (c) Xe (d) S Which element is expected to have lowest first ionisation energy (a) Sr (b) As (c) Xe (d) S November 9, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

The length of the telescope is 36 cm. The focal lengths of its lens can be The length of the telescope is 36 cm. The focal lengths of its lens can be November 9, 2020 Category: Chapter 9 - Ray Optics , MTG NEET Physics , Part 1 ,

The magnifying power of an astronomical telescope is 8 and the distance between the two lenses is 54cm. The focal length of eye lens and objective lens will be respectively The magnifying power of an astronomical telescope is 8 and the distance between the two lenses is 54cm. The focal length of eye lens and [...]

The formation of the oxide ion O 2- requires first an exothermic and then an endothermic step as shown below This is because The formation of the oxide ion O 2- requires first an exothermic and then an endothermic step as shown below This is because November 9, 2020 Category: Uncategorised (JEE Advanced Physics by [...]

In a laboratory four convex lenses L1, L2, L3 ​ and L4 of focal lengths 2,4,6 and 8cm respectively are available. Two of these lenses form a telescope of length 10 cm and magnifying power 4. The objective and eye lenses are respectively : 4 6 and 8cm respectively are available. Two of these lenses [...]

In which of the following process highest energy is absorbed (a) Cu to Cu + (b) Br to Br – (c) I to I – (d) Li to Li + In which of the following process highest energy is absorbed (a) Cu to Cu + (b) Br to Br - (c) I to I - [...]

Highest energy will be absorbed to eject out the electron in the configuration (a) 1s2 2s2 sp1 (b) 1s2 2s2 2p3 Highest energy will be absorbed to eject out the electron in the configuration (a) 1s2 2s2 sp1 (b) 1s2 2s2 2p3 November 9, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP [...]

The decreasing order of the ionization energy (in kJ/mol) of He, Mg – and Na is He > Mg > Na. The increasing order of the 2nd ionization energy (in kJ/mol) of these elements will be Mg - and Na is He > Mg > Na. The increasing order of the 2nd ionization energy (in [...]

The correct decreasing order of first ionisation enthalpies of five elements of the second period is (a) Be > B > C > N > F The correct decreasing order of first ionisation enthalpies of five elements of the second period is (a) Be > B > C > N > F November 9, 2020 [...]

Magnification at least distance of distinct vision of a simple microscope having its focal length 5 cm is Magnification at least distance of distinct vision of a simple microscope having its focal length 5 cm is November 9, 2020 Category: Chapter 9 - Ray Optics , MTG NEET Physics , Part 1 ,