Physics question and answers for September 18, 2024
- Q xample 4 12 a A current carrying circular loop lies on a smooth horizontal plane Can a uniform magnetic field be set up in such a manner that the loop...
- Q Example 3 58 A man A moves due to East with velocity 6 ms 1 and another man B moves in N 30 E with 6 ms 1 Find the...
- Q A body of mass 2 kg is lying on a rough inclined plane of inclination 30 Find the magnitude of the force parallel to the incline needed to make the...
- Q List I contains different AC circuits with rms voltage of ac sources as shown List II contains the mms currents supplied by the ac voltage sources Then match the options...
- Q c Must every magnetic configuration have a north pole and a south pole What about the field due to a toroid d Two identical looking iron bars A and B...
- Q 17 A train is moving with a velocity of 30 km h 1 due East and a car is moving with a velocity of 40 km h due North What...
- Q The linear density of a vibrating string is 1 5x10 kg m The equation of a transverse wave along the string is given by y 0 02 2x 60t where...
- Q vi In sonometer if tensions and length both becomes four times taking mass per unit length consta then for vibration of same frequency Tunning fork Number of loop will becomes
- Q 1 A positively charged particle projected towards east is deflected towards north by a magnetic field The field may be a towards west c upward b towards south d downward...
- Q 49 System of Particles and Rotational Motion 34 Four rods of mass M and length are joined at the centre Find the moment of inertia of the system about axis...
- Q Two blocks of mass M 20kg and M 12kg ar connected by a metal rod of mass 8 kg The system is pulled vertically up by applying a force of...
- Q 50 0 kg of N g and 10 0 kg of H g are mixed to produce NH3 g Calculate the moles of NH g formed Identify the limiting reagent...
- Q A In the circuit shown the cells A and B have negligible resistances For V 12 V R 500 S and R 100 2 the galvanometer G shows no deflection...
- Q 4 An electric field of magnitude 1000 N C is produced between two parallel plates having a separation of 20 cm as shown in figure 29 E4 a What is...
- Q from rest when spring was in its natural length The pulley also has mass m but it is frictionless Suppose the value of m is such that finally it is...
- Q 2 28 Two fixed identical conducting plates o and B each of are charged to Q and q respectively where Q q 0 A third identical plate y free to...
- Q 4 A positive point charge is placed inside a spherical metallic shell The electric field lines are represented by 2003 A B C D
- Q A ray of light travelling in the direction i 31 onvon M sido is incident on a plane mirror After reflection it travels along the direction 1 31 The angle...
- Q I shown in fig E F G and H are cells of emf 2 1 3 and 1 volts and their internal resistances JEE 1981 are 2 1 3 and...
- Q A plano convex lens made of material of refractive index with radius of curvature R is silvered on the curved side How far away from the lens mirror must you...
- Q In the above problem if reaches the ground at a horizontal distance d the second ball reaches the ground at a horizontal distance 3 12 d 1 6d 2 3d...
- Q set into oscill What is the trajectory of the bob of its extreme positions b at its mean positio 3 A man of mass 70 kg stands on a weighing...
- Q A step up transformer operates on 220 V line and supplies 2 2 A The ratio of primary and secondary winding is 11 50 The output voltage in the secondary...
- Q 3 0 50 mm A student measures the time period of 100 oscillations of a simple pendulum four times The data set is 90s 91s 95s and 92s If the...
- Q Illustration 8 A wire of resistance 0 5 m 1 is bent into a circle of radius 1 m The same wire is connected across a diameter AB as shown...
- Q 1 54 8 Figure 1 54 shows four point charges at the of a square of side 2 cm Find the magnitude and direction of the electric field at the...
- Q Which of the following forces is not conservative A F 3i 4 C F 3yi 4xj B F 3xi 4yi D F 3x 1 4y j on raxis has potential...
- Q Equation of a SHM is x A sintot A Average velocity from 2 a 2A T 2 What is average acceleration from a to A will be 3 3 Aw...
- Q The coefficient of static friction between your hand and a pie plate is about 0 8 If you want to put a cream pie in someone s face what minimum...
- Q 7 When two tuning forks fork 1 and fork 2 are sounded together 4 beats per second are heard Now some tape is attached on the prong of the fork...
- Q A potentiometer is being used to compare two resistances The balancing length for a standard resistor R 10 0 2 is 58 3 cm while that for an unknown resistance...
- Q 12 cells each of emf 1 5 V and internal resistance 0 5 2 are arranged in m rows each containing n cells connected in series Calculate the values of...
- Q The mass of a body is 70 kg When completely immersed in water it displaces 2000 cm water What is the relative density of the material of the body
- Q In the given circuit a charge of 80 C is given to the upper plate of the 4 F capacitor Then in the steady state the charge on the upper...
- Q Example 16 17 Water flows through the tube as shown in figure The areas of 2 cm respectively The rate of flow of water through the tube is 500 cm...
- Q A plate of thickness t made of a material of refractive index u is placed in front of one of the slits in a double slit experiment a Find the...
- Q The power of spectacles lens required for a person is 5 dioptre when separation between spectacles and eye is 2 cm What will be the power of contact lens required...
- Q In a hydrogen tube it is observed that through a given cross section 3 13 x 10 5 electrons per sec moving from right to left and 3 12 x...
- Q Find the equivalent resistance between A and B of given wire mesh of 14 resistances each wire having resistance R A R 2 5R 6 C B 2R 3R D...
- Q A physical quantity P is related to four observables a b c and d as follows P The percentage errors of Vcd measurement in a b c and d are...
- Q A car moving with a speed of 50 km h can be stopped by brakes after atleast 6 m If the same car is moving at a speed of 100...
- Q A copper wire has a resistance of 0 5 22 Another copper wire of the same mass as the first one double in length of the first Find the resistance...
- Q D In Column I situations are given in which a constant force starts acting on a body initially at rest on a rough horizontal surface Match with the observations given...
- Q In the figure the vertical sections of the string are long A is released from rest from the position shown Then DCE 2006 m vol 1 2 m A m...
- Q For the equation vuf for a lens if 1 u v 4f wty 3f to be applicable 2 u v 2f 4 u v 5f
- Q 12 Find the potential difference VA VB for the circuit shown in the figure B IV 2 IV 350 1350 192 IV 192 4 19 SIR A
- Q olenginio D The magnetic field at all points inside the pipe is the same but not zero Figure shows cross section view of a infinite cylindrical wire with a cylinderical...
- Q Figure shows a long straight wire of a circular cross section radius a carrying steady current I The current is uniformly distributed across this cross section Calculate the magnetic field...
- Q as shown below Arrange Three resistances of equal value are arranged in them in the increasing order of power dissipation different combinations www I III 1 III I N I...
- Q Comprehension 3 The general motion of a rigid body can be considered to be a combination of i a motion of its centre of mass about an axis and ii...
- Q 21 A glass vessel contains air at 60 C To what temperature must it be heated to expel one third of the air the pressure remaining con stant Neglect the...
- Q A beam of protons is moving horizontally towards you As it approaches it passes through a magnetic field directed downward The beam deflects 3 Does not deflect 1 To your...
- Q Example 18 In a double slit pattern 6000 the first order and tenth order maxima fall at 12 50 mm and 14 75 mm from a particular reference point If...
- Q 25 An equilateral triangle of side length 1 is formed from a piece of wire of uniform resistance The current I is fed as shown in the figure Then the...
- Q HH www H 1uf 42 3uf 10V www 422 www 10 11
- Q X The equation of a wave is given by Y A sin V k where is the angular velocity and v is the linear velocity The dimensions of k is
- Q A uniform and constant magnetic field B coming out of the plane of the paper exists in a rectangular region as shown in figure A conducting rod PQ is rotated...
- Q P 2 3 60 Consider a hydrogen like ionized atom with atomic number Z with a single electron In the emission spectrum of this atom the photon emitted in the...
- Q 20 A plane electromagnetic wave Ez 100 cos 6 10 t 4x V m propagates in a medium of dielectric constant 1 1 5 3 2 4 2 2 0...
- Q 63 For a projectile projected at an angle are equal tan 4 u sin 20 u sin 0 2g sin 20 g 1 tan A 4 tan 4 sin 0...
- Q The arrangement shown in Fig 1 64 consists of two identical uniform solid cylinders each of mass m on which two light threads are wound symmetrically Find the tension of...
- Q Is defined 1 Only in conservative fields 2 As the negative of work done by conservative forces 3 As the negative of workdone by external forces when AK 0 4...
- Q 22 Aballoon of volumie V contains a gas of mass mat a pressure P and temperature 15 C Gas is pumped into the balloon so that its volume is doubled...
- Q 7 Consider building the following resistor a square ABCD of side length and connect the centers of each side to form another square Connect the centers of each side of...
- Q If two vectors A 1 3 5k and A 1 31 ak are equal then the value of a is a 5 b 5 a 2
- Q 5 At a point on the right bisector of a magnetic dipole the magnetic a potential varies as 1 b potential is zero at all points on the right bisector...
- Q An alternating voltage is connected in series with a resistance R and an inductance L If the poten tial drop across the resistance is 200 V and across the inductance...
- Q D C moves to left A to night A vessel containing a liquid is heated with its contents The pressure at the bottom of vessel due to the liquid should...
- Q A rough wedge of slant length 5 m is kept as shown in the figure Find the height h if the block of weight 10N just starts to slip in...
- Q Two equal and opposite forces each of magnit F is applied along a rod of transverse sectional area A The normal stress to a section PQ inclined to transverse section...
- Q um current from a combination of cells now should the cells be grouped a Series b Parallel c Mixed d Depends upon the relative values of external and internal resistance
- Q A blind person after walking 10 steps in one direction each of length 80 cm turns randomly to the left or to right by 90 After walking a total of...
- Q the Example 6 5 A block of mass m is placed on the inclined surface of a wedge as shown in Fig 6 249 Calculate t acceleration of the wedge...
- Q 50 In the above problem between the two fragments when their position vectors are perpendicular to each other is 1 40 m 2 20m 3 10m 4 5m 51 At...
- Q 39 In the circuit shown the value of I in ampere is a 1 b 0 60 c 0 4 d 1 5 452 www 4V 492 www 492 492...
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