Question Answers

An electron is projected as shown in fig. with kinetic energy K, at an angle θ=45^∘ between two charged plates. The magnitude of the minimum electric field so that the electron just falls to strike the upper plate is An electron is projected as shown in fig. with kinetic energy K at an angle θ=45^∘ [...]

An electric dipole is placed at an angle of 30∘ with an electric field of intensity 2×10^5 NC^−1. It experiences a torque equal to 9Nm. Calculate the charge on the dipole if the dipole length is 2cm is Force between two identical charges placed at a distance of r in vacuum is F. Now a [...]

A charged drop of mass 3.2×10^12 g floats between two horizontal parallel plates maintained at potential difference of 980 V and separated between the plate is 2 cm . The number of excess or direction electron on the drop is Force between two identical charges placed at a distance of r in vacuum is F. [...]

Which of the following set has all the coloured ions (a) Cu + , Cu 2+, Ni 2+ (b) Cu 2+ , Co 2+, Sc 3+ Co 2+ Cu 2+ Ni 2+ (b) Cu 2+ Sc 3+ Which of the following set has all the coloured ions (a) Cu + November 30, 2020 Category: Uncategorised [...]

An electron initially at rest falls a distance of 1.5cm in a uniform electric field of magnitude 2×10^4N/C. The time taken by the electron to fall this distance is An electron initially at rest falls a distance of 1.5cm in a uniform electric field of magnitude 2×10^4N/C. The time taken by the electron to fall [...]

An α-particle of mass 6.4×10^−27 kg and charge 3.2×10^−19C is situated in a uniform electric field of 1.6×10^5Vm^−1. The velocity of the particle at the end of 2×10^−2m path when it starts from rest is Force between two identical charges placed at a distance of r in vacuum is F. Now a slab of dielectric [...]

The dimagnetic ion is (a) V 2+ (b) Cr 2+ (c) Ti 3+ (d) Sc 3+ The dimagnetic ion is (a) V 2+ (b) Cr 2+ (c) Ti 3+ (d) Sc 3+ November 30, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Which one belongs to 3d-transition series (a) Copper (b) Gold (c) Cobalt (d) Silver Which one belongs to 3d-transition series (a) Copper (b) Gold (c) Cobalt (d) Silver November 30, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Which of the following element does not show variable valency (a) Ni (b) Zn (c) Cu (d) Mn Which of the following element does not show variable valency (a) Ni (b) Zn (c) Cu (d) Mn November 30, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Zn is related to which group (a) IIB (b) IIA (c) IA (d) IB Zn is related to which group (a) IIB (b) IIA (c) IA (d) IB November 30, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,