Physics question and answers for September 03, 2024
- Q Explain the difference between work in Physics and work as done every day example If you push a cart inside a store are you doing any work Describe an real...
- Q Two capacitors of capacitances C and 2C connected in parallel and are charged to a potentia difference of V If now battery is removed and a material of dielectric constant...
- Q 109 Statement A A tree showing seasonal activity shows typical S shaped curve Statement B in determining Gravity does not play any kind of role plant growth Read above statements...
- Q Q 13 A storage battery is connected to a charger for charging with a voltage of 12 5Volts The internal resistance of the storage battery is 192 When the charging...
- Q 20 Five cells each of internal resistance 0 22 and e m f 2 V are connected in series with a resistance 402 The current through the external resistance is...
- Q 27 A solid conducting sphere of radius 10 cm is enclosed by a thin metallic shell of radius 20 cm A charge Q 20 C is given to the inner...
- Q Choose the correct alternative A x x is a positive integer and x 64 0 B y y is a natural number which divides 42 C z z is a...
- Q A Equal wavelengths have equal linear momenta B Equal energies have equal linear momenta C Equal linear momenta have equal wavelengths D Equal frequencies have equal linea momenta
- Q The fundamental frequency of a string stretched with a weight of 4 kg wt is 25 Hz The weight required to produce its octave is Neglect change in linear mas...
- Q O A body cools from a temperature 3T to 2T in 10 minutes The room temperature s T Assume that average method of Newton s law of cooling is applicable...
- Q 139 If the pressure of hydrogen gas is increased 14 from 1atm to 100 atm keeping the hydrogen ion concentration constant at 1M the voltage of the hydrogen half cell...
- Q 119 The activity of a radioactive sample is measured as 1850 counts per minute at t 0 and as 185 counts per minute at t 10 minute The decay constant...
- Q 9 An object is attached to a horizontal spring and somewhere along its motion has a kinetic and potential energies of 19 4 Joules and 24 9 Joules respectively Given...
- Q Resistance of 6 Q each are connected as shown in diagram when the current 1 A is flowing as shown The potential difference Vp Vois 6 52 692 692 www...
- Q A satellite is moving with a constant speed v in circular orbit around the earth An object of mass m is ejected from the satellite such that it just escapes...
- Q The apparent frequency and real frequency of sound are same A If source of sound and observer are moving in the same direction with sam speed 3 If source of...
- Q Two protons each of mass m and charge e are held at rest at distance 1 m apart in air The maximum velocity acquired by each proton after release is...
- Q In an ammeter 10 of the main current is passing through galvanometer if the galvanometer is shunted with a 102 resistance The resistance of the galvanometer is 1 2012 2...
- Q A direct current of 5A is superposed on an alternating current I 10 sin oot flowing through the wire The effective value of the resulting current will be 2015 a...
- Q A parallel plate capacitor have plate area A and plate separation d is charged by a battery of voltage V The battery is then disconnected The work needed to pul...
- Q A particle having charge q and mass m is projecte with velocity v 27 31 in uniform electric fiel E E Magnitude of change in momentur during time interval tis...
- Q Question 3 A block of mass 3m is suspended by a meter scale rod of mass m as shown in figure If the tension in string A is equal to...
- Q This section contains 35 SINGLE COR 20 Q An AC circuit has an inductive reactance equal to 10 Q and a resistance of 100 The effective impedance of the circuit...
- Q A projectile is thrown with velocity v making an angle 0 with the horizontal It just crosses the tops of two poles each of height h after 1 second and...
- Q This section contains 15 SINGLE CORRECT TYPE quest Read More A ideal gas taken through the cycle ABCA as shown in PV diagram The work done during the cycle is...
- Q For the system shown in figure the pulleys 130 are light and frictionless The tension in the string will be 0 m 2 A mgsine C 2mgsin0 3 B mgsin0...
- Q A force of 10 N stretches a spring 0 2 m A 250 g mass attached to this spring is vibrated from a position 10 cm below the equilibrium position...
- Q A and B are two radioactive substances whose 12 half lives are 1 and 2 years respectively Initially 10 gm of A and 1 gm of B is taken The...
- Q When two waves with same frequency and constant phase difference interfere A there is a gain of energy B there is a loss of energy C the energy is redistributed...
- Q 11 For a ballistic pendulum if the length L 1 9 meter angle of deflection from vertical 0 17 4 degree the mass of the bullet m 27 gram and...
- Q b If the clock is started at 12 00 noon what will it read after a time of 21 8 h has elapsed on Earth Enter the time to the...
- Q 10 Two carts of masses m 3 174 kg and m 7 454 kg undergo an elastic collision Before the collision while the second cart is stationary the velocity of...
- Q n a meter bridge a standard resistor R ohm is connected in left gap and two dentical wires A and B are connected one after the other in right gap...
- Q Two isolated spherical conductors have radii 5 cm and 10 cm respectively They have charges of 12 C and 3 C Find the charge of bigger sphere after they are...
- Q A ball of mass m is dropped from height h on a light platform fixed at the top of vertical spring as shown in the figure The platform is depressed...
- Q A current i 3 36 1 2t x 10 2 A increase at a steady rate in a loop straight wire A very small circular loop of radius 10 3...
- Q A block A of mass m is given a velocity vo towards another block B of same mass B is attached to an ideal spring of spring constant K A...
- Q A neutron a proton an electron and an a particle enter in a region of constant magnetic field with equal velocities The tracks of the particles are shown in figure...
- Q 5 A body of mass m at rest breaks into three parts due to some explosion with masses in the ratio1 3 3 The two parts with same mass move...
- Q 2 An unpolarised beam of light is incident on a group of four polarising sheets which are arranged in such a way that the characteristic direction of each polarising sheet...
- Q 105 In given circuit the power consumed in 120 16 resistor is W then the power consumed in 3 49 resistan is A 64 3 W 16 85 www 452...
- Q 04 If wind is blowing from source side to observer side what will be effect occur on the difference between apparant freq to original freq during relative motion between source...
- Q 09 There are two radio nuclie A and B A is an alpha emitter and B is a beta emitter Their distintegration constants are in the ratio of 1 2...
- Q 2 28 A wedge of mass M 2 m rests on a smooth horizontal plane A small block of mass mo rests over it at left end A as shown...
- Q Two springs both have spring constant k and relaxed length zero They are each stretched to a length and then attached to two identical masses 1 and 2 and a...
- Q The insulating property of air breaks down at the intensity of electric field 3 x 106 V m The maximum charge that can be given to a sphere of diameter...
- Q 132 For shown charge system B q a Aq a a C q the electric field is A Non zero everywhere B Zero everywhere C Zero at midpoint of BC...
- Q Give reasons 4 Ozone layer is a protective shell of earth Microbes in soil get distroyed 2 Answer the following questions 3 Explain with help of diagram how soil is...
- Q The electric field due to an electric dipole at a distance r from its centre in axial position is E If the dipole is rotated through an angle of 90...
- Q 13 A coil having n turns and area A is initially placed with its plane normal to the magnetic field B It is then rotated through 1800 in 0 2...
- Q 12 If the density of material of a square plate and a circular plate shown in fig is same the centre of mass of the composite system 1 will be...
- Q A common emitter amplifier is designed with n p n transistor a 0 99 The input resistance is 1KQ and load is 10 KQ the voltage gain will be A...
- Q A ball released from the top of a tower travels 11 36 of the height of the tower in the last second of its journey The height of the tower...
- Q 3 45 Q 187 In the given circuit 4 A steady current enters int the network The charge stored on plate B of the capacitor is 4 A 1 8...
- Q 126 The relative density of the material of a body is the ratio of its weight in air and the loss of its weight in water By using a spring...
- Q 103 How do velocity of a charge particle moving 10 in a circle depends on the radius of the circle if the field is a magnetic b electric A a...
- Q 28 A wedge of mass M 2 m rests on a smooth horizontal plane A small block of mass mo rests over it at left end A as shown in...
- Q Two monoatomic ideal gases A and B of molecular masses m and respectively are enclosed in separate containers kept at the same temperature The ratio of the speed of sound...
- Q A rocket is fired upwards Its engine explodes fully in 12 second The height reached by the rocket as calculated from its velocity time graph is A 1200 x 66...
- Q A spool of mass M inner radius R and outer radius 2R MR having moment of inertia 2 sliding on a rough horizontal surface by the help of an applied...
- Q If de broglie wavelength of a particle is 2 then calculate de broglie wavelength of He on accelerating across same potentia difference A 2 2 C 22 B 2x D
- Q 4 If the energy released in the fission of one nucleus is 200MeV Then the number of nuclei required per second in a power plant of 16KW will be A...
- Q This section contains 35 SINGLE CORRE YPE questions Each question has 4 Read More The current in the part of electric circuit is 1 A 2A 12A 01 A O...
- Q A particle having charge q and mass mis projected with velocity v 21 3j in uniform electric field Ej Magnitude of change in momentum during time interval t is 13mt...
- Q 1 A simple harmonic motion having an amplitude A and time period T is represented by the equation y 5 sin t 4 m Then the values of A in...
- Q Force acting on a particle moving in the x y plane is F y i x N x and Yare in metre As shown in Fig the particle moves from...
- Q This section contains 35 SIN O 3T The period of oscillation of a magnet in earth s field is T The period of oscillation when an extra field twice of...
- Q 2 Electric field at a point on the axis of an electric dipole is E If strength of dipole moment and distance are doubled then new electric field at new...
- Q 4 Electric potential in a region varies with distance as V 3x2 The electric field strength at a point P 2 4 2 m is V 1 12 along ve...
- Q A boat is moving with a velocity 5kmph relative to water And water in a river is flowing with a velocity 3kmph The ratio of times taken by boat to...
- Q The electric potential V in volt in a region of space is given by V ax ay 2az where a is a constant given by a 1 25 x 10...
- Q 2 A long line charge having linear charge density 2 5x is kept inside a cube of side L as shown in the figure If cube starts moving towards right...
- Q rings each of mass m are connected to a block of same mass m through inextensible light strings Rings are constrained to move along a smooth horizontal rod Initially system...
- Q 54 A lona cylindrical conductor of radius R carries a current i as shown in figure The current density is a function of distance from the axis r according to...
- Q 21 Uniform electric field of strength 20 is present in a region as shown in the figure Points A and B are separated by 20 3 cm If potential at...
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