AIR Spotlight – The Quest for a Linguistic Identity and the Birth of a Nation
AIR Spotlight is an insightful program featured daily on the All India Radio Newsonair. In this program, many eminent panellists... View Article
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International Relations This Week – Solomon Islands & Other Issues
International relations is a very important segment of the UPSC syllabus. In this series, we present an analysis of the... View Article
13 Dec 2021: PIB Summary & Analysis
TABLE OF CONTENTS 1. PM Khanij Kshetra Kalyan Yojana (PMKKKY) 2. LokpalOnline 3. Decarbonising hydrogen production 4. National Helpline Against... View Article
What is the LCM of 6 and 7?
The Least Common Multiple (LCM) is a way of finding the smallest common multiple between any two numbers or more.... View Article
A cyclotron is opened at an oscillator frequency of 12 MHz and has a dee radius R = 50 cm. What is the magnitude of the magnetic field needed for a proton to be accelerated in the cyclotron?
A cyclotron is a machine that accelerates charged particles or ions to high energies. Both electric and magnetic fields are used in... View Article
A circular current loop of magnetic moment M is in an arbitrary orientation in an external magnetic field B . The work done to rotate the loop by 30 about an axis perpendicular to its plane is_____
A circular current loop of magnetic moment M is in an arbitrary orientation in an external magnetic field B. The... View Article
The value of [cos4A – sin4A] is equal to
The value of [cos4A−sin4A] is equal to Solution cos4A−sin4A can be expressed as \(\begin{array}{l}(\cos ^{2}A-\sin ^{2}A)(\cos ^{2}A+\sin ^{2}A)\end{array} \) From... View Article
Consider a uniform electric field in the z-direction. The potential is a constant (a) for any x for a given z (b) for any y for a given z (c) on the x-y plane for a given z (d) All of these
The correct answer is (d) all of these Solution The surface which is the locus of all points which are... View Article
The capacitance of a spherical condenser is 1μF. If the spacing between the two spheres is 1 mm, then the radius of the outer sphere is (a) 30cm (b) 6m (c) 5cm (d) 3m
Given that According to the given details, we get to know that C=1μF=10−6F R2−R1=1mm=10-3m Find out We have to determine... View Article
Two points P and Q are maintained at potentials of of 10V and −4V respectively. The work done in moving 100 electrons from P to Q is equal to
Potential difference V is the work done in moving a unit charge∴ Work done in moving a charge Q through... View Article
2 to the power of 10 is _________
The power of a number indicates the number of times it must be multiplied. It is written in the form... View Article
Explain the evolutionary theory of origin of state
The evoutionary theory of origin of state can be explained by few factors. The theory that explains the convincing origin of... View Article
A bullet of mass 0.04 kg moving with a speed of 90m/s enters a heavy wooden block and is stopped after a distance of 60 cm . What is the average force exerted by the block on the bullet?
Given that As per the given data we get to know that m=0.04kg u=90m/s v=0m/s S=60cm Find out We have... View Article
If two waves, each of intensity I having the same frequency but differing by a constant phase angle of 60 superpose at a certain point in space , then the intesity of resultant wave is:
A large amount of energy is carried by a wave of large amplitude and a low amplitude wave carries less... View Article
How to find zeros of cubic polynomial?
For a polynomial, there could be some values of the variable for which the polynomial will be zero. These values... View Article
Two forces P and Q have a resultant perpendicular to P. The angle between the forces is _______.
Let θ be the angle between P and Q. Let the resultant R make an angle α with P. Given... View Article
What is the sadness that the poet refers to in the poem “keeping quiet”?
The sadness of a man is formed by his own thoughts and actions. It is ironic to notice that a... View Article
The unit of rate of a first order reaction is
A first-order reaction can be defined as a chemical reaction in which the reaction rate is linearly dependent on the... View Article
The electric field at a distance 3R/2 the centre of a charged conducting spherical shell of radius R is E. The electric field at a distance R/2 from the centre of the sphere is (a) zero (b) E (c) E/2 (d) E/3
The correct answer is (a) zero Solution Gauss law states that According to the Gauss law, the total flux linked... View Article
A car accelerates on a horizontal road due to the force exerted by (a) The engine of the car (b) The driver of the car (c) The earth (d) The road
The correct answer is (d) The road Solution Frictional force refers to the force generated by two surfaces that contacts... View Article
