Physics question and answers for September 16, 2024
- Q There are 5 different boxes and 7 different balls The number of ways in which these balls can be distributed so that box 2 and box 4 contain 1 ball...
- Q he following table has 3 columns and 4 rows Based on table there are THREE questions Each uestion has FOUR options A B C and D ONLY ONE of these...
- Q Surface charge density o E I 2 II I Area A Surface charge density o FIGURE 2 25 The parallel plate capacitor 74 the plates is disc the area of...
- Q and the block is 0 25 and that between the hand and the block is 0 15 what force must he exert Ans 5 kg wt A man lifts a...
- Q 8 A long cylindrical shell carries positive surface charge o in the upper half and negative surface charge o in the lower half The electric field lines around the cylinder...
- Q Which of the following quantities remains constant during projectile motion A Average velocity between two points B Average speed between two points C dv dt d dt v D 1...
- Q 28 Three large plates A B and C are placed parallel to each other and charges are given as shown The charge that appears on the left surface of plate...
- Q Example 3 73 An aircraft flies at 400 km h in still air A wind of 200 2 km h is blowing from the south The pilot wishes to travel...
- Q down a frictionless hemispherical bowl It passes the point A at t 0 At this instant of time C the horizontal components of its velocity are v A bea Q...
- Q 1 A projectile is projected from ground such that 2 second before it reaches the highest point it makes an angle 37 with vertical then the velocity of projectile at...
- Q 3 The distance of the moon from the earth is about 60 times the radius of the earth What will be diameter of the earth approximately in degrees as seen...
- Q In a p n junction diode change in temperature due to heating a does not affect resistance of p n junctio b affects only forward resistance c affects only reverse...
- Q 15 The figure represents the observed intensit of X rays emitted by an X ray tube as function of wavelength The sharp peaks and B denote Intensity A B Wavelength...
- Q A potentiometer wire of length L and resistance 102 is connected in series with a battery of e m f 2 5V and a resistance in its primary circuit The...
- Q 5 A bar magnet is 10 cm long is kept with its north N pole pointing north A neutral point is formed at a distance of 15 cm from each...
- Q 12 The average electromagnetic 1 EH value of poynting vector in wave is 2 4 E Ho 2 E Ho
- Q 3 Figure 6 64 shows a balanced Wheatstone bridge R 5Q D Q 50 92 A S 10 22 B G P 100 S2 www C Fig 6 64 a...
- Q F a 1 F c 3 F d 4 F 93 Four capacitors are connected in a circuit as shown in the figure The effective capacitance in F between points...
- Q One face of a rectangular glass plate 6 cm thick is silvered An object held 8 cm in front of the first face forms an image 12 cm behind the...
- Q 2 The atmospheric pressure on a hill is 68 cm of mercury What do you understand from the statement 3 How does atmospheric pressure change with the change in altitude...
- Q The position time graphs of two cars A and B are straight lines making angles 30 and 60 with the time axis respectively The ratio of velocities of A and...
- Q 3 Block A of mass m is to be kept at rest against a smooth vertical wall by applying a force F as shown in figure The force required is...
- Q 3 Which one of the following is not an assumption of kinetic theory of gases 1 The volume of a gas molecule is negligible 2 The gravitational attraction between the...
- Q 10 An aeroplane moving horizontally from west to eas with some velocity and with an acceleration 5 m s drops a food packet at some instant Then The path of...
- Q The graph between Ek and is P E kinetic energy and p momentum 1 Ek 3 E 1 p FL 2 Ek 4 EK 1 p
- Q The distance between slit and biprism and between biprism and screen are 50 cm each The angle of biprism is 179 and its refractive index is 1 5 If the...
- Q 7 The graph between displacement and time for a particle moving with uniform acceleration is a a Straight line with a positive slope b Parabola c Ellipse d Straight line...
- Q A spherical black body with a radius of 12 cm radiates 450 watt power at 500 K If the radius were halved and the temperature doubled the power radiated in...
- Q Example 7 13 A thin uniform rod of length and mass m rotates uniformly with an angularly velocity in a horizontal plane about a vertical axis passing through one of...
- Q iv The magnitude of area of the parallelogram formed by the adjacent sides of vectors A 31 21 a nd 3 21 2k is Sol
- Q The measure of mass and volume of a body are 2 00 g and 5 0 cm respectively with possibl errors of 0 01 g and 0 1 cm What...
- Q In the figure shown V b at t 1 s is ab 2H a 1 30 V 202 2F b 4V www1100000 1 q 4t C 2 30 V 3...
- Q 5 The length of one edge of a glass plate of thickness 0 2 cm is 9 8 cm If this edge of the glass plate touches the surface of...
- Q 50 When the electron of a hydrogen like atom jumps from a higher energy level to a lower energy level then 1 Angular momentum of the electron remains constant 2...
- Q In Fig 5 52 connected 2 10 2 and R 20 Determine th Illustration 5 32 equivalent resistance between points i A and D and ii as shown Given R...
- Q The curve for the moment of inertia of a sphere of constant mass M versus distance of axis from its centre 1 3 Hind V X 2 4 X
- Q Two thin conducting plates very large parallel to each other carrying total charges A and 20 A respectively where A is the area of each plate are placed in a...
- Q 6 The acceleration a of a particle starting from rest varies with time according to relation a at B The velocity of the particle after a time t will be...
- Q Find the electric field at the origin due to the line charge ABCD of linear charge density 2 a 0 0 B y C 0 a 0 a 0 0
- Q In the circuit shown the resistor is 1 A when the points P and M are connected to a d c voltage source The potential difference between the points M...
- Q ng emf E E cos 100 m st cos500 m st S is connected in series with a capacitor and a resistor The steady state current in the circuit is...
- Q The displacement x of a body of mass 1 kg on smooth horizontal surface as a function of time t is given by 1 where x is in metres and...
- Q Che er 1 22 A capillary tube of radius 0 50 mm is dipped vertically in a pot of water Find the difference between the pressure of the water in...
- Q 11 A in a moving vertical plane At a certain when instant the link is inclined 60 to the horizontal the point A is moving horizontally at 3 m s...
- Q 22 What should be the current in branch BD after 22 switch S is closed Se ostrzy 152 201 1 1A 3 8A 19 B 352 S 252 402 25V...
- Q 27 shows a rod PQ of length 20 0 cm and mass 200 g suspended through a fixed point O by two threads of lengths 20 0 cm each A...
- Q A dip needle vibrates in a vertical plane perpendicular to the geographical meridian The time period of vibration is found to be 2 second The same needle is then allowed...
- Q in the direction During the perio is the componen low and this et along the river bank of a river flowing at a speed as shown in figure What minimum...
- Q A sphere of mass m is held between two smooth inclined walls For sin 37 3 The normal reaction of the wall 2 is equal to 2 A 37 37...
- Q 5 Three concentric spherical shells have radii a b and c a b c and have surface charge densities o o and o respectively If VA V and V denote...
- Q al 81 In the given figure the angle between the 9 Dalected rays is equal to n g e r 82 1 A 2 2 A 3 3 A 4...
- Q spring is 100 N m Extension produced in the spring in equilibrium is g 10 m s 1 10 cm 3 30 cm 3Kg reelle 3Kg 2 20 cm 440...
- Q 0 Certain quantity of water cools from 70 C to 60 in the first 5 minutes and to 54 C in the nex minutes The temperature of the surroundings i...
- Q 41 A skater weighing 70 kg stands on ice He throws a stone weighing 3 kg with a velocity of 8 m s in a horizontal direction Find the distance...
- Q Example 11 11 When light of wavelength 4000 A is incident on a barium emitter emitted photoelectrons in a transverse magnetic field strength B 52x10 6 T moves in a...
- Q A parallel plate capacitor has capacitance C If the charges the plates are Q and 30 find the i charges at the inner surfaces of the plates ii potential difference...
- Q convex lens of focal length f is placed in contact with a concave lens of the same foca ength The equivalent focal length of the combination is A zero B...
- Q The variation of velocity of a particle moving along a straight line is as shown in the figure given below The distance travelled by the particle in 5 s is...
- Q 146 Light of uniform intensity impinges perpendicularly on a totally reflecting surface If the area of the surface is halved the radiation force on it will become double a a...
- Q The circuit shown here has two batteries of 8 V 16 V and three resistors 30 90 and on and a capacitor of 5 F how much is current i...
- Q 3 Consider the situation of figure 29 Q3 The work done in taking a point charge from P to A is WA from P to B is WB and from...
- Q C 0 25 sec D 0 5 sec The maximum acceleration of a particle in SHM is made two times keeping the maximum speed to be constant It is possible...
- Q Two identical discs of equal radiu mass are kept in contact on a frictionless table A third disc of same mass but of double radius strikes them symmetrically and comes...
- Q a region sible that B region to 10 Let E and B denote electric and magnetic fields in a frame S and E and B in another frame S moving...
- Q the driver thrown e in touch we would f the bus and the owever een the sudden ictional ur feet strictly s some parts go with ere it is ore...
- Q If an electrion is placed in a uniform electric field then the electron will 1 experience no force 2 moving with constant velocity in the direction of the filed 3...
- Q If the four forces as shown are in equilib press F F in unit vector form F 15 N 37 30 30 10 N
- Q Which one of the following statements is not true about Newton s second law of motion F m a The second law of motion is consistent with the first law...
- Q The length of potentiometer wire is L A cell of emf e is balanced at a length from the positive End of the wire Assuming there is no contribution in...
- Q 8 Two identical long conducting wires AOB and COD are placed at right angle to each other such that one is above the other and O is their common point...
- Q A bullet moving with a uniform velocity v stops suddenly after hitting the target and the whole mass melts to m specific heat S initial temperature 25 C melting point...
- Q Transfer characteristics output voltage V vs input voltage V for a base biased transistor in CE configuration is as shown in the figure For using transistor as a switch it...
- Q a 26 8 b 20 c 6 25 d 12 5 NEET 2018 At what temperature will the rms speed of oxygen molecules become just sufficient for escaping from the...
- Q Consider the circuit shown in the figure Capacitors A and B each have capacitance C 2 F The plates of capacitor A are shorted using a wire of resistance R...
- Q 8 The displacement of a particle moving along the x axis is given by equation x 2t 21t 60t 6 The possible acceleration of the particle when its velocity is...
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