Physics question and answers for September 19, 2024
- Q R in R 32 In the situation shown the potential difference across the cell of smaller e m f is 2 V 19 ww 10 V ww 202
- Q In vector form Biot Savart s lat Idlx r Ho dB oc 4 K or 3 From Eq i the direction of the cross product vector d 1 the right...
- Q Single 7 1 A U tube of base length filled with same volume of two liquids of densities p and 2p is moving with an acceleration a on the horizontal...
- Q 8 A convex lens of focal length f 10 cm is cut through a dimeteral plane into two semicircular halves In doing so glass of 0 5 mm thickness is...
- Q Find the equivalent capacitance of the combination shown in Fig 2 85 between the points A and B 10 5 9 Cs HH SI C Ans C B 2G G...
- Q 23 The appropriate M versus magnetization magnetising field H curve for a paramagnetic substance is most a A b B c C d D MA 0 C A B D...
- Q A body is thrown vertically upwards Which one of the following graphs correctly represen2017 velocity vs time V 4 V f V U gt a ve edge of a cliff...
- Q 1012 A wave of length 2m is superposed on its reflected wave to form a stationary wave A node is located at x 3m The next node will be located...
- Q A hollow spherical ball of inner radius a and outer radius 2a is made of a uniform material of constant thermal conductivity K The temperature within the ball is maintained...
- Q 13 Containers A B and C of equal volume contain oxygen neon and methane respectively at the same temperature and pressure The correct increasing order of their masses is a...
- Q 28 A physical quantity is a physical property of a phenomenon body or subs by measurement 34 The magnitude of the components of a vector are to be considered dimensionally...
- Q A solid conducting sphere having net charge Q and radius 3 a contains a hollowed spherical region of radius 2 a A point charge Q is placed at a distance...
- Q J A stone projected at angle 0 with horizontal from the roof of a tal building falls on the ground after three second Two second after the projection it was...
- Q Three point charges 9 92 and q3 are taken such that when q and q2 are placed close together to form a single point charge the force on q3 at...
- Q 15 Two stones are projected from level ground Trajectories of two stones are shown in figure Both stones have same maximum heights above level ground as shown Let T and...
- Q Example 9 4 Suppose while sitting in a parked car you notice a Jogger approaching towards you in the side view mirror of R 2 m If the jogger is...
- Q Example 2 10 a A 900 pF capacitor is charged Fig 2 31 a How much electrostatic energy is stored by the capacitor b The capacitor is disconnected from the...
- Q straight line A particle is resting over a smooth horizontal floor At t 0 a horizontal force starts acting on t Magnitude of the force increases with time according to...
- Q Magnetic field at point P due to both infinite long current carrying wires is 2 540 6T 5A 5m 2 5A P 2 5m
- Q 3 Three particles are projected upward with initial speeds 10m s 20m s and 30 m s The displacements covered by them in their last second of motion are x...
- Q A man is sitting inside a moving train and observes the objects outside of the train Then choose the single correct choice from the following statements all stationary objects outside...
- Q A wooden block and a metal coin are connected by a string as shown in figure Both have same volume and both are placed in a beaker of water Now...
- Q which of the coins will revolve with the 38 You may have seen in a circus a motorcyclist driving in vertical loops inside a death well a hollow spherical chamber...
- Q Example 5 6 Two cylinders P and Q rest in a channel as shown in Fig 5 13 B 60 Q P 180 mm D Fig 5 13 The cylinder...
- Q Example 5 15 On a mine site a rock is exploded On explosion rock breaks into three parts Two parts go off at right angles to each other These two...
- Q Velocity v of a particle depends upon the time t according to the equation v a bt C The dimension of bc will be 1 LT 1 3 L T...
- Q Answer the following questions in brief 1 Why do we need food 2 What is the difference between energy provided by carbohydrates and fats How does it help to include...
- Q Magnetic field strength at the centre of regular pentagon made of a conducting wire of uniform cross section area as shown in figure is 5 i 4 72 2 2...
- Q 4 6 4 7 Velocity of a stone projected 2 second before it reaches the maximum height makes angle 53 with the horizontal then the velocity at highest point will...
- Q In the figure shown the blocks A C are pulled down with constant velocities u Acceleration of block B is GF V A tan 0 sec 0 b C 1...
- Q 6 12 Figure shows a 5 kg ladder hanging from a string that is connected with a ceiling and is having a spring balance connected in between A boy of...
- Q A box of dimensions 1 5 mx 0 75 mx 0 75 m and mass 250 kg rests on a truck with the smaller face down Assuming that the friction...
- Q a Like there are landforms on land ocean floor also has submerged landforms because i There is land under water ii There are volcanoes under water iii Land is continuous...
- Q Two identical block each of mass M 9 kg are placed on a rough horizontal surface of frictional coefficient 0 1 The two blocks are joined by a light spring...
- Q A battery of 20 cells each having e m f 1 8 V and internal resistance 0 1 2 is charged by 220 volts and the charging current is 15...
- Q 9 In a comman base connection a certain transistor has an emitter current of 10mA and collector current of 9 8 mA Calculate the value of the base current
- Q Electric potential in an electric field is given as V K r K being constant if position vector r 21 33 6k then electric field will be 21 31 6k...
- Q 6 6 A bob is hanging over a pulley inside a car through a string The second end of the string is in the hand of a person standing in...
- Q Speed of water in a river is 4 km h and man can swim at 5 km h Minimum time taken by the man to cross the river of width...
- Q Find the time taken by the particle in going from x 0 to x 2 x Asinot A 2 A sin ot T sin sin 6 TU 2 11 6...
- Q A block is placed on a rough horizontal plane A time dependent horizontal force F kt acts on the block where k is a positive constant The acceleration time graph...
- Q sphere of mass M is attached to a massless spring of spring contant K It can roll without slipping along a horizontal surface If the system is released after an...
- Q B Explain the following terms 1 Translatory motion 4 Displacement 2 Oscillatory motion 5 Average speed C Distinguish between the following 1 Translatory motion and rotatory motion 2 Distance and...
- Q 8 If percentage error in the measurement of radius of the sphere is 1 5 then the maximum percentage error in measurement of its volume is 1 3 3 4...
- Q The resultant of two vectors P and Q is R If Q is doubled then the new resultant vector is perpendicular to P Then R is equal to 2 Q...
- Q 4 1 What is the force between two small charged spheres having charges of 2 x 107C and 3 x 107C placed 30 cm apart in air
- Q Two identical positive charges are placed on the y axis at y a and y a The variation of V electric potential along x axis is shown by graph V...
- Q In the arrangement shown in Fig 1 24 the masses m of the bar and M of the wedge as well as the wedge angle a are known trolls The...
- Q a 5 If work W is done is blowing a bubble of radius R from soap solution then the work done in blowing a bubble of radius 2R from the...
- Q A conducting sphere of radius R carrying charge Q lies inside an uncharged conducting shell of radius 2R If they are joined by a metal wire A Q 3 amount...
- Q The moment of inertia of a semi circular area of radius r about the y axis is Ly c Tr 8 5 r4 b d RVW TI 4 64 r...
- Q 0 278 A truck is carry a box of mass m 50 kg on its flat horizontal rough surface with coefficient of friction 0 3 It is crossing a circular...
- Q 11 Relative density of silver is 10 8 What is the density of silver in SI unit 5 izomm vlous 12 While floating in water part of volume of a...
- Q 16 15 Two moles of a monatomic ideal gas undergo a cyclic process ABCDA as shown in figure BCD is a semicircle Find the efficiency of the cycle PA Id...
- Q The area bounded by the curves y loge x and y log x is a e 2 sq units e sq units c b 3 e sq units d e...
- Q 22 A small plate of metal work function 1 17 eV is placed at a distance of 2 m from a monochromatic light source of wavelength 4 8 x 1077...
- Q Example 9 46 A horizontal force F acts on the hollow sphere at its centre as shown Coefficient of friction between ground and sphere is u What is maximum value...
- Q 15 assuming equal amplitudes gives mental s a cos at and s a cos w t 0 s are the one ency this ance ent ing nic ies 15 45...
- Q Q9 Charges of 2 0 x 106 C and 1 0 x 106 C are placed at the corners A and B of a square of side 5 0 cm...
- Q A simple camera with a converging lens of 60 mm focal length is focused on very far objects T focus the camera on a nearby object 1 5 m away...
- Q 15 Why is the emitter the base and the collector of a BJT doped differently 16 Which method of biasing is used for operating transistor as an amplifier
- Q D In a common base connection the emitter current is 6 28mA and collector current is 6 20 mA Determine the common base DC current gain
- Q 3 Two bodies of masses 1 Kg and 2 Kg a connected by a metal wire shown in figur force of 10N is applied on the body of mas Kg...
- Q A man generates a symmetrical pulse in a string by moving his hand up and down At t 0 the point in his hand moves downward The pulse travels with...
- Q A point charge q is placed on the line AH and just outside the cube of side d at a distance of r r d Total flux of electric field...
- Q Two identical circular loops each of radius r carrying currents i and i are placed co axially at a small distance of separation d Find the force of interaction between...
- Q Draw the circuit diagram of a half wave rectifier Explain its working What is the frequency of ripple in its output Why do we need filters in a power supply
- Q Example 9 5The earth takes 24 h to rotate once about its axis Ho much time does the sun take to shift by 1 when viewed fro the earth Solution...
- Q An electron moves along vertical line and towards observer the pattern of concentric circular field lines of magnetic field which is produced due to its motion 1 ACW In horizontal...
- Q 1 AB is an inclined plane of inclination 30 with horizontal Point O is 20 m above point A A particle is projected horizontally from O leftwards and it collides...
- Q Two identical small plastic balls are rubbed against a piece of wool such that both of them received approximately 2 10 2 and 2 5 x 10 2 electrons respectively...
- Q 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 The...
- Q Paragraph for question nos 14 Katrina and Kareena were crossing a river which is flowing towards right at constant speed 5 m min travelling in two different boats having same...
- Q In given circuit applied voltage V 50 2 sin 100m volt and mmeter reading is 2A then calculate value of
- Q A body moving at 2 m s can be stopped over a distance x If its kinetic energy is doubled how long go before coming to rest if the retarding...
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