Physics question and answers for September 08, 2024
- Q 1 If Y K G are Young s modulus bulk modulus and shear modulus of elasticity respectively and o is Poisson s ratio then which of the following relations is...
- Q A cylindrical tube of cross sectional area A has two air tight frictionless pistons at its two ends The pistons are tied with a straight two ends The pistons are...
- Q Two capacitors are connected of capacitance 2 F and 3 F in series The outer plate of the 2 F capacitor is connected to 1000 V source and outer plate...
- Q Select the wrong statement 1 Work done by human heart per beat is 0 5J 2 The energy required to break one bond of DNA is 0 06eV 3 Work...
- Q 0 and 20 The curve between potential en distance r between atoms of a diatomic molecule is shown in figure If FA FB FC FD and Faro B forces of...
- Q The spectral emissive power E for a body at temperature T is plotted against the wavelength and area under the curve is found to be A At a different temperature...
- Q Two parallel metal plates disconnected from battery having charges Q and Q face each other at a certain distance between them If the plates are now dipped in kerosene oil...
- Q Two men start from origin at the same time Man A is moving speed V while B is moving towards Y direction with speed 3 V Find out the magnitude...
- Q 10 gm of ice at 0 C is kept in a calorimeter of water equivalent 10 gm How much heat should be supplied to the apparatus to evaporate the water...
- Q The Young s modulus of a wire is numericall equal to the stress at which 1 Strain produced in the wire is unity 2 Length of wire gets doubled 3...
- Q The balancing potentiometer length for a cell is 560 cm in a experiment When an external resistance of 10 is connected in parallel to cell the balancing length change by...
- Q Statement I The ferromagnetic property depends on temperature At high temperature ferromagnet becomes paramagnet Statement II At high temperature the domain wall area of a ferromagnetic substance increases In the...
- Q A multistage amplifier consists of three stages the voltage gain stages are 60 100 and 160 Calculate the overall gain in dB 11 964 10 dB 120 20 dB 12...
- Q VB 56 A projectile is projected from the ground with spe 20 m s at an angle 30 with vertical The radius curvature of the path of projectile when velo...
- Q 4 If the river wa of rest then what was the displacement of swimmer 9 A man is moving with velocity V finds that rain is falling at an angle...
- Q 2 A V A river is flowing with speed V The speed of swimmer is 3V with respect to river Find out the speed of the swimmer with respect to...
- Q 25 In a gas discharge tube if 3 x 1018 electrons are flowing pe sec from left to right and 2 x 10 8 protons are flowing p second from...
- Q 8 a Name the type of radiation which when enters the muscle tissues produces heat b Name the type of radiation that is used in communication using cellphones c Which...
- Q mig is If the centre of the mass of three particles is at rest and it is known that two of them are moving along different non collinear lines then...
- Q iv Deduce the moment of inertia for a hollow spherical shell about an axis passing through its centre Also deduce the moment of inertia of the same shell if the...
- Q 4 When two resistances X and Y are put in the left hand and right hand gaps in a wheatstone meter bridge the null point is at 60cm If X...
- Q A solid sphere of mass m 2 kg gravity s 0 5 is held stationary relative to tank filled with water by attaching a string between sphere and bottom of...
- Q 39 River of width 500 m is flowing at a speed of 10 m s A swimmer can swim at a speed of 10 m s in still water If...
- Q The magnetic force acting on a charged particle having charge 2 C in a magnetic field of 2 T acting in y direction moving with velocity 21 3 x 10...
- Q A Non inverting Op Amp has input resitance of 6 6 K Ohm and feed back resistance of 68 K Ohm If the input voltage is 0 7 What is...
- Q Consider Fraunhoffer diffraction pattern obtained with a single slit illuminated at normal incidence At the angular position of the first diffraction minimum the phase difference in radius between the wavelets...
- Q 5 A cyclist and a motorcyclist are moving with speed V and 2V as shown The separation between them initially is L The sped of both the vehicle is constant...
- Q 232 If t represents the install instantaneous velocity becomes perpendicular the direction of initial velocity during a projectile to represents the time after which the partic attains maximum height then...
- Q 6 Select the correct relation between speed of sound in a and elasticity of air 1 Speedo adiabatic elasticity of air 2 Speed adiabatic elasticity of air 3 Speed isothermal...
- Q For a series R L C Network is shown determine the un damped natural frequency and damping ratio of the circuit 6v S 10 5 rad sec 0 25 10...
- Q 4 One end of a uniform wire of length L and of Wo is attached rigidly to a point in the roof and a weight W is suspended from its...
- Q Q 11 Two coherent send waves sources of different intensities which interfere The ratio of maximum intensity to the minimum intensity is 25 The intensities of the sources are in...
- Q 94 A particle started revolving from rest with a constant angular acceleration a in a circular path of radius r If centripetal acceleration becomes numerically equal to tangential acceleration at...
- Q A 4V B 4 A swimmer starts swimming upstream and he travels L distance with respect to earth in a given time If the swimmer starts moving down the stream...
- Q C L V D 6 Which statement is not true in case of relative motion A Relative displacement is independent to the frame of references B Relative separation is independent...
- Q Heat is being supplied at a constant rate to a sphere of ice which is melting at the rate of 0 1 gm sec It melts completely in 100 sec...
- Q 0 b a d 1 5 V decrease the range of an ammeter its resistance need to be increased An ammeter has resistance R and range I Which of the...
- Q Given 1 47E0 9 x 10 Nm C Q6 What is electrostatic shielding Explain one application of it Q7 A potential difference of 4 Volt is applied across a copper...
- Q 26 A swimmer can swim in still water at a speed of 5 m s and takes t and to time to cross a river in shortest time and shortest...
- Q 213 A vector A which has magnitude 8 0 is added to a vector B which lies on x axis The sum of these two vectors lies on y axis...
- Q 229 If A and B are two vectors inclined to each other at angle 0 then component of A perpendicular to B and lying in the plane containing A and...
- Q 3 4 m s 12 A man can row a boat with 8 km h in still water He is crossing a river of width 8 km where the speed...
- Q 3 HQ 3 Hp riw 33 A body is projected with same speed at different angles covers the same horizontal distance R If T and T are two time of...
- Q The reading of voltmeter in the circuit shown is 6 V 1 2 25 V 2 3 25 V 40 2 wwww 60 2 www V 40 Q 3 4...
- Q Let a vector ai B be obtained by rotating the vector 31 by an angle 45 about the origin in counterclockwise direction in the first quadrant Then the area of...
- Q 80 A point is moving on X Y plane such that y co ordinates varies with time as x a sin wt y a 1 cos wt where a and...
- Q The combination of straight and the circular wire carrying current i is shown in the figure It consists of a circular arc of radius R and central angle made by...
- Q An electron and a particle enter a region of uniform magnetic field of induction B with equal velocities The direction of magnetic field B is perpendicular and into the plane...
- Q Q 4 How much work is done to move a charge of 0 05 C between two points on a certain equipotential surface 1 Q 5 The electro static force...
- Q What amount of heat must be supplied to 2 0 10 2 kg of nitrogen at room temperature to raise its temperature by 45 C at constant pressure Molecular mass...
- Q a State and prove Gauss theorem of electrostatics Using this find the electric field near a uniformly charged plane sheet b If the intensity of the electric field near the...
- Q The value of the potential difference across a conductor is 28 V A current of 7 A is passing through it What is the conductance of the given conductor O...
- Q 3 450 MJ m 25 A uniform wire of length 3m and mass 10 kg is suspended vertically from one end and loaded at other end by a block of...
- Q the figure a 5cm and b 20cm If the M I of th wheel is 3200kg m the angular acceleration would be 12X1 6 0 1 10 1 rad s...
- Q 72 Two projectiles are thrown horizontally from a high cliff in opposite direction with same speed 20 m s simultaneously At what time velocities of both particles become perpendicular 1...
- Q A V 3 A river is flowing with speed V When the swimmer is swimming upstream then his speed is 2V with respect to earth Find out the speed of...
- Q In the arrangement shown in figure the mass of the rod M exceeds the mass m of the ball The ball has an opening permitting it to slide along the...
- Q 10 A semicircular glass tube filled with water containing an air bubble is sealed at its ends If the tube is held with its plane vertical and made to move...
- Q 190 In the given diagram shown for a projectile what is the angle of projection 10y4 VA 1 tan 1 3 tan 1 4 3 D Dela al nozieq A...
- Q 27 Three bulbs of 40 W 60 W and 100 W are arranged in series with 220 V Which bulb has minimum resistance 1 100 W 3 60 W 2...
- Q 3 53 225 An object is moving on a circular path of with constant speed v The average acceleration of the object after it has travelled three and half rounds...
- Q assumed to be perfectly conducting 30 69 E A wwww 62 www B 302 TEU 7 Statement 1 The current in branch AB is non zero Statement 2 The potential...
- Q 76 A man wants to cross a river 600 m wide flowing at 8 m s in shortest time Man has a speed of 6 m s in still water...
- Q 153 Two stones are thrown simultaneously from the top of a building horizontally but in opposite directions they will be moving perpendicular to each other initial say after time t...
- Q D 7 A train is moving with speed V as shown It crosses a station which has the length 2L as shown The length of the train is L Find...
- Q In the figure there are two particles A B each of mass m A is connected to ceiling by a light inextensible thread OA and E is connected to A...
- Q 12 A spot light source is fixed 4 m from the vertical wall and is rotating at rate 1 rad s The spot image moves horizontally on the wall The...
- Q A person cannot see objects distinctly at a distance less than 1 m The power of the spectacles that he use in order to read a paper at a distance...
- Q Transfer function of following system is R s G G G1 G2 1 G1G3 G1G4 G2G3 G2G4 G G1G2 G3G4 1 G1G3 G1G4 G2G3 G2G4 G1 G2 1 G1G3 G1G4...
- Q 50 A particle of mass 6 kg moves with an of v 81 81 m s A constant velocit force F 301 N is applied on the particle Initially th...
- Q 3 127 A body A is projected vertically upwards Another body B of same mass is projected at an angle of 60 with the horizontal If both the bodies attain...
- Q 9 A non conducting ring of radius R has uniformly distributed positive charge Q A small part of ring of length d is removed d R The electric field at...
- Q An object is placed at a distance of 20 cm from a co axial combination of two lenses A and B The combination of the lenses forms a real image...
- Q An observer is moving with constant towards a fixed source of sound As per Doppler s effect the variation of frequency fobserved with time t is best represented by 1...
- Q Two charges of equal magnitudes and kept at a distance r from each other exert a force F on each other If eac of the charges are doubled and distance...
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