Physics question and answers for September 14, 2024
- Q 11 The increase in pressure required to decrease the 200 L volume of a liquid by 0 008 in kPa is Bulk modulus of the liquid 2100 MPa is 1...
- Q A rectangular tank of mass m and charge Q over it is placed on a smooth horizontal floor A horizontal electric field E exists in the region Rain drops are...
- Q Example 6 12 In the arrangement shown in figure JA 4 0 kg and mg 1 0kg The system is released from rest and block B is found to have...
- Q A thin circular ring of mass m radius R has a uniformly distributed charge Q The ring is placed on a rough horizontal floor The coefficient of friction between the...
- Q A ship of mass 2 107 kg initially at rest is pulled by a force of 5 105 N throug distance of 2 m Assuming that the resistance due to...
- Q 49 A Carnot engine having an efficiency of n 1 10 as heat engine is used as a refrigerator If the work done on the system is 10 J the...
- Q AL In which of the following cases the contact force between A B is maximum m mg 1kg g 10ms 2 1 50 N 2 3 A B A A...
- Q 30 Two steel rods and an aluminium rod of equal length l and equal cross section are joined rigidly at their ends as shown in the figure below All the...
- Q 23 A body is initially at rest It undergoes one dimensional motion with constant acceleration The power delivered to it at time t is proportional to 1 1 t2 O...
- Q 36 u V graph for the virtual image due to a concav mirror can be plotted as 1 3 2 u
- Q 1 The focal length of a concave mirror is f and the distance from the object to the principal fo is x Then find the ratio of the size of...
- Q A uniform rod of length L lies on a smooth horizontal table A particle moving on the table strikes the fod perpendicularly at an end and stops Find the distance...
- Q A mass of 1g carrying charge q falls through a potential difference V The kinetic energy acquired by it is E When a mass of 2g carrying the charge q...
- Q The quantum levels of atoms of hydrogen and deuterium are only approximately the sam The difference between the two systems of levels is exaggerated in the figure n n 5...
- Q A The position of centre of mass relative to body is independent of the choice of coordinate system R Centre of mass does not shift its position in the absence...
- Q 34 Two bodies A and B of masses 5 kg and 10 kg in contact with each other rest on a table against a rigid wall Fig 5 21 The...
- Q 0 An AC voltage e eo sin 50t e cos 100mt is connected in series with a resistor and capacitor The steady state current through circuit is found to be...
- Q D Consider a system of two particles having masses m and m If the particle of mass m is pushed towards m through a distance d by what distance should...
- Q Which of the following graphs correctly shows the variation in kinetic energy KE of a metal sphere falling freely in a lake Assume sufficient depth of the lake to impart...
- Q 34 A sinusoidal voltage of peak value 200 volt is connected to a diode and resistor R in the circuit shown so that half wave rectification occurs If the forward...
- Q Magnetic field through a coil is changed with respect to time then emf induced in it then select the incorrect regarding induced emf in coil 1 Coil may be made...
- Q Example 10 11 Young s double slit experiment is carried out using microwaves of wavelength 3 cm Distance between the slits is d 5 cm and the distance between the...
- Q 24 A hemisphere of volume v is kept in a liquid of density p as shown in figure Vertical thrust on the hemisphere due to liquid inside it is 1...
- Q B 1 v vo 2 v v 3 v v 4 v v The armature coil of dynamo is rotating The generated induced emf varies and the number of magnetic...
- Q 41 A block of mass 10 kg is moving on a rough surface as shown in figure The frictional force acting on block is v 4 m s 1 20...
- Q 13 A steel rod is 4 cm in diameter at 30 C A brass ring has an interior diameter of 3 992 cm at 30 C In order that the...
- Q 116 The position x of a particle varies with time t as 4 X 3 Then the particle is t 1 Slowing down 2 Always moving towards x axis 3...
- Q A block slides along a track from one level to a higher level by moving through an intermediate valley as shown in figure The track is friction less until the...
- Q Question 14 A simple screw jack used in actual practice is A non reversible machine A reversible machine An ideal machine not a lifting machine
- Q A positive charge Q is fixed at a point in space There is another charge q which moves in a circular path of radius r around the given fixed charge...
- Q 6 The numbers 2 745 and 2 735 on rounding off to 3 significant figures will give a 2 75 and 2 74 c 2 75 and 2 73 b...
- Q 10 If instantaneous current in a circuit is given by 2 3 sin wt A then the effective value of resulting current in the circuit is 1 3 17 2...
- Q A charged particle of mass m and charge q travels on a circular path of radius r in a uniform perpendicular magneti field B The time taken by the particle...
- Q View in Englah In any experiment to measure ratio of radi of circular paths Two particles having charge 20 and g are projected with same speed if the masses of...
- Q 30 Force acting on a particle moving along x axis is as shown in figure Find points of stable and unstable equilibrium A F B C E
- Q The focal is in cm 2 92 combination 1 6 4 12 88 Image of an object at infinity is formed by 3 108 a convexlens of focal length 30...
- Q 1 A small block B is placed on another block A of mass 5 kg and length 20 cm Initially the block B is near the right end of block...
- Q refractive index of 2 3 has a It is surrounded by air A light ray is incident at the midpoint of one end of the rod as shown in the...
- Q 3 y 1 5 x 5 A particle starts moving with constant acceleration with initial velocity i 5 m s After 4 second its velocity becomes 31 21 m s...
- Q Two sinusoidal currents are given by the equation 50 sin at i 25 sin cot The phase difference between them is degrees Select one O a 75 O b 45...
- Q A string is fixed at a and its free end is at x 0 A triangular shape wave pulse is moving along the string with speed v m s in...
- Q An object is at rest Now a force applied to it which give it an acceleration of a 2t ms What will be object velocity at t 3 s 161...
- Q 3 2 224 A car is moving on a circular track at a speed of 20 m s having radius 100 m If it starts decelerating uniformly at the rate...
- Q int of as a resultant reaction and Applied force frictional force O normal reaction frictional force applied force the weight of the bo normal reaction the weight of the Previous...
- Q A diatomic gas of moleculer weight 30 gm mole is filled in a container at 27 C It is moving at a velocity 100 m s If it is suddenly...
- Q find the electric field at the location of qa in the figure below given that qb qc qd 1 35 nC q 1 00 nC and the square is 16...
- Q The resolution limit of eye is one minute at a di of 10 km from the eye two objects are at x m apart f two objects just resolved by...
- Q 4 When alternating current flows through a conductor the rate of flux change 1 Is higher in the inner part of the conductor 2 Is lower in the inner part...
- Q 1 4 3 2 3 4 A number of small drops of mercury adiabatically 1 increase 2 remain same spherical 3 16 9 4 64 27 coalesce to form a...
- Q A conducting rod of length L is rotating about a perpendicular axis passing through point O as shown in figure The potential difference between ends M and Nis Y 2x7...
- Q A block is placed on horizontal surface as shown in 16 figure Which of the following statement is correct The normal force on the block is not equals the weight...
- Q 13 A large open tank has two holes on the side wall One is a square hole of side L at a depth y from the top and the other...
- Q 11 Consider a compound slab consisting of two different material having equal area cross section and thermal conductivities K and 4K The equivalent thermal conductivity of the slab is 0...
- Q 9 A model rocket fired from the ground ascends with a constant upward acceleration A small bolt is dropped from the rocket 1 0 s after the firing and fuel...
- Q 10 A massless rod of length is suspended by two identical string AB and CD of equal length A block of mass 10 Kg is suspended from point P such...
- Q You have two lenses A and B of focal lengths 10 cm and 10 cm respectively State the nature and power of each lens Which of the two lenses will...
- Q If Amin is minimum wavelength produced in X ray tube and is the wavelength of k line As the operating tub woltage is increased A increases min 3 increases NUGA...
- Q 20 The cylindrical tube of a spray pump has radius R One end of it has n fine holes each of radius r If the speed of liquid in the...
- Q A homogeneous electric field and a uniform magnetic field Bare pointing in the same direction A proton is projected with its velocity parallel to It will Question Type Single Correct...
- Q A moving charge produces 1 electric field only 2 magnetic filed only both of them 4 none of these Two infinitely long thin insulated straight wires lie in the x...
- Q 13 A cylindrical wire of radius R is carrying current i uniformly distributed over its cross section If a circular loop of radius r is taken as amperian loop then...
- Q A 2 00 m long rope having a mass of 80 g is fixed at one end and is tied to a light string at the other end Th tension...
- Q Water is moving with a speed of 5 18 ms through a pipe with a cross sectional area of 4 20 cm The water wat gradually descends 9 66 m...
- Q 5 3R 2 2 2R 1 Variation of pressure P with volume monoatomic gas is shown in figure The molar specific heat of the gas in the process will be...
- Q 17 a An electron is shot directly toward the centre of a large metal plate that has surface charge density 2 0 x 10 6 Cm 2 The initial kinetic...
- Q 1 2 Two rods of different materials having coefficients of thermal expansion a and a2 and Young s moduli Y and Y respectively are fixed between two rigid massive walls...
- Q 2 What is a Rectifier Explain in detail two types of circuits for a full wave rectifier Also calculate rectifier efficiency and ripple factor for a full wave rectifier
- Q m g a In the given figure a smooth parabolic wire track lies in the xy plane vertical The shape of track is defined by the quation yx Aring of...
- Q Write down the relation between torque and angular momentum Write down the principle of conservation of angular momentum Define moment of inertia State the theorem of perpendicular axes Define Poisson...
- Q 10 The coefficient of volume expansion of material of a metre scale is 18 x 105 K Find the fractional change in its length when temperature is changed by 20...
- Q 1 4 2 3 Consider a long straight wire of cross section area A carrying a current i Let there be n free electrons per unit volume An observer places...
- Q In the circuit in Figure 1 a 20 ohm resistor sits inside 114 g of pure water that is surrounded by insulating Styrofoam igure 20 0 Water 30 0 V...
- Q In the figure shown a current I is established in the long straight wire AB Another wire CD carrying current I i placed in the plane of the paper The...
- Q West A proton of mass m and charge q enters a magnetic field B with a velocity v at an angle with the direction of B radius of curvature the...
- Q A negative charged particle falling freely under gravity enters a region having uniform horizontal magnetic field pointing towards north The particle will be deflected towards 1 East 4 South 2...
Get Answers to Unlimited Questions
Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!
Membership Benefits:
- Unlimited Question Access with detailed Answers
- Zin AI - 3 Million Words
- 10 Dall-E 3 Images
- 20 Plot Generations
- Conversation with Dialogue Memory
- No Ads, Ever!
- Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!