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coloured bangle when CRUSHED becomes white because of the PHENOMENON called scattering of LIGHT

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D) INSIDE the BAR magnet the magnetic field LINES are from S- POLE to N- pole.

Magnetic field is inversly proportional to the square of the POSITION vector r.So option (A) is correct.Explanation:since we know the biot savart LAW for a magnetism which sates that magnetic field is (i) directly proportional to current FLOWING in the conductor(ii) directly proportional to length of the conductor(iii)directly proportional to angle between length the conductor and position vector.(IV)inversely proportional to cube of the position vector of the conductor...................(1)so magnetic field is inversly proportional to the square of the position vector r.

this QUESTION is of which CLASS

The TOTAL work done in rotating the DIPOLE from to is .Option (A) is correct.Explanation:The work done in rotating from INITIAL ANGLE to a final angle is given by.where, = torque exerted on the magnet due to the MAGNETIC field.We know,where, = dipole moment of the magnet. = magnetic field in which the magnet is placed. = angle between and .Therefore, the work done in rotating from initial angle to a final angle is given byGiven:....Putting these values in above expression of required work done, we get, Thus, the correct option is (A).

the ATTRACTIVE FORCE between them is ELECTROMAGNETIC

Two rings X and Y are placed in such a way that their axes are along the X and the Y axes respectively and their centres are at the ORIGIN. Both the rings X and Y have the same RADII of 3.14 cm. If the CURRENT through X and Y rings are 0.6 A and 0.8 A respecively, find the value of the resultant MAGNETIC FIELD at the origin.μ₀ = 4π x 10⁻⁷SI.

tion:SUPPOSE let the smaller body cover a DISTANCE x before collision then -: Mx =5M(9R - x)X=45R-5x6x= 45RX=45R/6X= 7.5RI HOPE this HELPS you please follow me and mark as brainliest

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the value between maximum REMAIN u =0.1 a5kg B GROUND 15kg ground L F =80n === 5n , 75 n

The value of potential energy when OBJECT on the ground is:P.E = Height of object × weight of objectExplanation:HOPE it's HELP you‼️‼️☑️☑️

P.E = 40.Explanation:HOPE it HELPS you.

the KINETIC ENERGY will be INCREASED 4 TIMES than before

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Aim: To study the variation of magnetic field with distance along the axis of a circular coil CARRYING current. Apparatus: Circular coil, compass box, ammeter, rheostat, commutator, cell, key, connection wires, etc. The purpose of the commutator is to allow the current to be reversed only in the coil, while flowing in the same direction in the rest of the circuit. Theory: A current carrying wire generates a magnetic field. According to Biot-Savart’s law, the magnetic field at a point due to an element of a conductor carrying current is, Directly proportional to the strength of the current, iDirectly proportional to the length of the element, dlDirectly proportional to the Sine of the angle θ between the element and the line joining the element to the point andInversely proportional to the square of the distance r between the element and the point. Thus, the magnetic field at O is dB, such that, Then, where, is the proportionality CONSTANT and is called the permeability of free space.Then, In vector form, Consider a circular coil of radius r, carrying a current I. Consider a point P, which is at a distance x from the centre of the coil. We can consider that the loop is made up of a large number of short elements, generating small magnetic fields. So the total field at P will be the sum of the contributions from all these elements. At the centre of the coil, the field will be uniform. As the location of the point increases from the centre of the coil, the field decreases. By Biot- Savart’s law, the field dB due to a small element dl of the circle, centered at A is given by, This can be resolved into two components, one along the axis OP, and other PS, which is perpendicular to OP. PS is EXACTLY CANCELLED by the perpendicular component PS’ of the field due to a current and centered at A’. So, the total magnetic field at a point which is at a distance x away from the axis of a circular coil of radius r is given by, If there are n turns in the coil, then where µ0 is the absolute permeability of free space. Since this field Bx from the coil is acting perpendicular to the horizontal intensity of earth’s magnetic field, B0, and the compass needle align at an angle θ with the vector sum of these two fields, we have from the figure The horizontal component of the earth’s magnetic field varies greatly over the surface of the earth. For the purpose of this simulation, we will assume its magnitude to be B0 = 3.5x10-5 T. The variation of magnetic field along the axis of a circular coil is shown here. HOPE it's helps uuu ✌✌✌

A galvanometer can detect only small currents. Thus, to measure large currents it is converted into an ammeter. It can be converted into an ammeter by connecting a low resistance called shunt resistance in parallel to the galvanometer.Let G be the resistance of the galvanometer and Ig be the current for full scale DEFLECTION in the galvanometer, the value of the shunt resistance required to convert the galvanometer into an ammeter of 0 to I AMPERE is,S = I g × G I − I gIg is calculated using the equation, Ig = nk, where n is the number of divisions on the galvanometer and K is the figure of merit of galvanometer.What is figure of merit of a galvanometer?The figure of merit of a galvanometer is defined as the current required in producing a unit deflection in the scale of the galvanometer. It is represented by the SYMBOL k and is given by the equation, Where E is the e.m.f. of the cell and θ is the deflection produced with resistance R.Let ‘l’ be the length of the resistance wire required for a resistance of S ohm, where, r is the radius of the wire and ρ is the resistivity of the material of the wire.hopes it's helps uuu ✌✌✌

Lorentz force, the force exerted on a charged particle q moving with velocity v through an electric E and magnetic field B. The entire ELECTROMAGNETIC force F on the charged particle is called the Lorentz force (after the Dutch PHYSICIST Hendrik A. Lorentz) and is given byF = QE + qv × B.

tion:RIGHT hand thumb rulehold your thumb of right hand in the direction of current and curling of fingerstowards the REQUIRES POINT GIVES the direction of magnetic field

Why Cyclotron cannot accelerate NEUTRON ? SOLUTION : Cyclotrons work on the principle of Lorentz force. A PARTICLE can EXPERIENCE a Lorentz force only if it is charged. Neutrons being uncharged are not accelerated by a cyclotron.

In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can CAUSE an object with mass to change its velocity (which includes to begin moving from a STATE of rest), i.e., to ACCELERATE. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, MAKING it a vector quantity. It is measured in the SI unit of newtons and represented by the SYMBOL F.

energy will DECREASE by 25 TIMES.Explanation:LET the velocity be v m/s.ke=1/2mv^2.Now, if velocity =v/5m/s, then the new ke=1/2m(v/5)^2=1/2m*(v/25) J.which implies that ke will REDUCE by 25 times of the initial ke.**ke=kinetic energy.

tion:Let the DEPTH at which acceleration due to gravity ( g) becomes 70% or 7g/10 = d.We know thatg_{d} = g(1 - \frac{d}{r} )g d =g(1− rd )Giveng_{d} = \frac{7g}{10}g d = 107g Also, R = 6400 km [ Radius of earth ]7g/10 = g [ 1 - d / 6400]7/10= 1-d/6400d/6400 = 1 - 7/10d/6400 = 3/10d =3 \times 6400 \div 103×6400÷10d= 1920 km.Therefore,1920 \: \: \: km1920km below the SURFACE of the earth does the acceleration due to gravity BECOME 70% of its value at the surface of earth

a)(MEU)MGB)meu mg/√(1+meu^2) , tan^-1 meuExplanation:

Explanation:1. MYOPIA or NEARSHIGHTED. Myopia occurs when the eyeball is too long, relative to the focusing POWER of the cornea and LENS of the EYE. 2. HYPEROPIA or FARESIGHTED. This vision problem occurs when LIGHT rays entering the eye focus behind the retina, rather than directly on it. 3. ASTIGMATISM. .4. PRESBYOPIA.

y GOOD morning Here is your ANSWER Physics is a BRANCH of science which deals with physical quantities of substance. HOPE it help you Please mark me please. #SIBI.......

Explanation:2 m/ s^2

tion:You can USE this FORMULA to FIND distance from image USING the formula, m= -v/u = hi/ho.

tion:Second LAW of motion --- SAYS that The acceleration of an object as PRODUCED by a NET force is directly proportional to the magnitude of the net force, in the same DIRECTION as the net force, and inversely proportional to the mass of the object.

g━━━━✿______________________________✿━━━━@Mg━━━━✿ If the speed of a CHANGED particle moving through a magnetic FIELD is increased, then the radius of curvature of its trajectory will (A) decrease (B) INCREASE (C) not change❤❤ (D) become half

A UNIT VECTOR is a vector having magnitude of one and is used for defining the direction.For EX- i capHOPE IT HELPS!MARK IT AS BRANLIEST.

F=Gm1m2/r^2so,G=6.626 *10^-11 Nm^2Kg^-2=6.626*10*40*10^-11/200=6.626*2*10^-11F=  13.26 *10^-11I suppose...HOPE it HELPS

s an object-detection SYSTEM that uses radio waves to determine the range, ANGLE, or velocity of objects. ... The termRADAR was coined in 1940 by the United STATES Navy as an ACRONYM for RAdio Detection And Ranging or RAdio Direction And Ranging.........

hello!!ANSWER:-3)5√2 is the CORRECT answer hello!!answer:-3)5√2 is the correct answer hope U LIKE thishello!!answer:-3)5√2 is the correct answer hope u like thisfollow me....

acceleration EQUATION: a= F-i/t where f is final VELOCITY I is initial velocity and t is the time taken