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ASEEM or Aatamanirbhar Skilled Employee Employer Mapping is a Skill Management Information System that acts as a directory of the skilled... View Article

Draft Drone Rules 2021: RSTV – Big Picture

Rajya Sabha TV programs and discussions are very insightful and informative from a UPSC perspective. In this article, we provide a gist of the... View Article

Parts of the Indian Constitution [UPSC Polity Notes]

The Constitution of India, its Parts, Schedules, and Articles are very important topics for the UPSC exam. It is a crucial part of the polity... View Article

22 July 2021: UPSC Exam Comprehensive News Analysis

CNA 22nd July 2021:- Download PDF Here TABLE OF CONTENTS A. GS 1 Related B. GS 2 Related POLITY AND GOVERNANCE 1. HC stays Arunachal’s entry... View Article

The resistance of the meter bridge AB in the given figure is [latex]4Omega[/latex]. With a cell of emf = 0.5 V and rheostat resistance Rh = [latex]2Omega[/latex] the null point is obtained at some point J. When the cell is replaced by another one of emf [latex]varepsilon =varepsilon _{2}[/latex] the same null point J is found for [latex]R_{h}=6Omega[/latex]. The emf [latex]varepsilon _{2}[/latex] is;

a. 0.3 V b. 0.5 V c. 0.4 V d. 0.6 V Answer: (a) Rh = ---------(1) When Rh = ----(2) From (1) and (2)... View Article

The variation of refractive index of a crown glass thin prism with wavelength of the incident light is shown. Which of the following graphs is the correct one, if Dm is the angle of minimum deviation?

Answer: (a) Since Dm = (μ – 1)A and on increasing the wavelength, μ decreases and hence Dm decreases. Therefore, correct answer is (a)... View Article

an amplitude modulated signal is given by vt

a. 1785 and 1715 b. 892.5 and 857.5 c. 89.25 and 85.75 d. 178.5 and 171.5 Answer: (c) , , , , , , Closest answer is (c)... View Article

In the given circuit the current through Zener Diode is close to:

a. 6.7 mA b. 4.0 mA c. 0.0 mA d. 6.0 mA Answer: (c) Since voltage across zener diode must be less than 10V therefore it will not work... View Article

A hydrogen atom, initially in the ground state is excited by absorbing a photon of wavelength 980Å. The radius of the atom in the excited state, in terms of Bohr radius a0, will be: (hc = 12500 eV – Å)

a. 9a0 b. 25a0 c. 4a0 d. 16a0 Answer: (d) Energy of photon =12500/980 = 12.75eV Electron will excite to n= 4 Since, R ∝ n2 Radius of... View Article

If the deBroglie wavelength of an electron is equal to 10³ times the wavelength of a photon of frequency 6×10 ¹⁴Hz, then the speed of electron is equal to : (Speed of light = 3×10 ⁸m/s, Planck’s constant = 6.63×10³⁴J . Mass of electron = 9.110³¹kg)

a. 1.8 x 106 m/s b. 1.45 x 106 m/s c. 1.1 x 106 m/s d. 1.7 x 106 m/s Answer: (b) V = 1.45 x 106 m/s... View Article

In a Young’s double slit experiment, the path difference, at a certain point on the screen between two interfering waves is (1/8)^th of wavelength. The ratio of the intensity at this point to that at the centre of a bright fringe is close to

a. 0.74 b. 0.80 c. 0.85 d. 0.94 Answer: (c)... View Article