Question Answers

Which of the following has highest paramagnetic character (a) Mn (II) (b) Fe (II) (c) Co (II) (d) Ni (II) Which of the following has highest paramagnetic character (a) Mn (II) (b) Fe (II) (c) Co (II) (d) Ni (II) November 29, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

In a photoelectric experiment, if both the intensity and frequency of the incident light are doubled, then the saturation photoelectric current if both the intensity and frequency of the incident light are doubled In a photoelectric experiment then the saturation photoelectric current November 29, 2020 Category: Chapter 11 - Dual Nature of Radiation and Matter [...]

If e/m of electron is 1⋅76×10^11Ckg^−1 and the stopping potential is 0.71 V, then the maximum velocity of the photoelectron is If e/m of electron is 1⋅76×10^11Ckg^−1 and the stopping potential is 0.71 V then the maximum velocity of the photoelectron is November 29, 2020 Category: Chapter 11 - Dual Nature of Radiation and Matter [...]

An ultraviolet light of wavelength 2000 Å irradiates a photo cell made of molybdenum metal . If the stopping potential is −1.5V , what is the work function of the metal ? An ultraviolet light of wavelength 2000 Å irradiates a photo cell made of molybdenum metal . If the stopping potential is −1.5V what [...]

Figure represents a graph of kinetic energy of most energetic photoelectrons Kmax (in eV) and frequency υ for a metal used as cathode in photoelectric experiment. The threshold frequency of light for the photoelectric emission from the metal is as compared to that of B is: The figure shows stopping potential Vs and frequency υ [...]

For a certain metal, incident frequency υ is five times of threshold frequency υ0 and the maximum velocity of coming out photoelectrons is 8×10^6ms−1 If υ=2υo, the maximum velocity of photoelectrons will be. For a certain metal incident frequency υ is five times of threshold frequency υ0 and the maximum velocity of coming out photoelectrons [...]

Transition metals show paramagnetism (a) Due to characteristic configuration (b) High lattice energy Transition metals show paramagnetism (a) Due to characteristic configuration (b) High lattice energy November 29, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

The atomic radii from Cr to Cu is almost identical because of (a) Increasing nuclear charge from Cr to Cu The atomic radii from Cr to Cu is almost identical because of (a) Increasing nuclear charge from Cr to Cu November 29, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Cuprous ion is colourless, while cupric ion is coloured because (a) Both have unpaired electron in d-orbital Cuprous ion is colourless while cupric ion is coloured because (a) Both have unpaired electron in d-orbital November 29, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Which of the following trivalent ion has the largest atomic radii in the lanthanide series (a) La (b) Ce (c) Pm (d) Lu Which of the following trivalent ion has the largest atomic radii in the lanthanide series (a) La (b) Ce (c) Pm (d) Lu November 29, 2020 Category: Uncategorised (JEE Advanced Physics by [...]