Physics question and answers for August 29, 2024
- Q A heavy truck moving with a velocity of 60 km h collides with a light drum at rest If the collision be elastic then the velocity of the drum immediately...
- Q associated with the spin where e is An electron has intrinsic angular momentum I called spin and a permanent magnetic dipole moment M the positive electron charge m is the...
- Q A ball is thrown vertically downwards from a height of 20 m with an initial velocity v It collides with the ground loses 50 of its energy in collision and...
- Q Two mirrors are inclined at an angle 9 as shown in the figure Light ray is incident parallel to one of the mirrors Light will start retracing its path after...
- Q A diver in a swimming pool wants to signal his distress to a person lying on the edge of the pool by flashing his water proof flash light 1 He...
- Q 3 0 3 ms and 0 5 ms A moving block having mass m collides with another stationary block having mass 4m The lighter block comes to rest after collision...
- Q 1 30 2 45 3 60 A parallel beam of monochromatic light is incident at one surface of a equilateral prism Angle of incidence is 55 an angle of emergence...
- Q 3 Concave mirror The field of view is maximum for 4 All the above can produce a vritual image 1 Plane mirror 2 Concave mirror 3 Convex mirror 4 Cylindrical...
- Q They co ordinate of the centre of mass of the system of three rods of length 2a and two rods of length a as shown in figure is Assume all...
- Q 6 The refractive index of the material of a prism is 2 and the angle of the prism is 30 One of the two refracting surfaces of the prism is...
- Q A uniform sphere is placed on a smooth horizontal surface and a horizontal force F is applied on it at a dist h above the surface The acceleration of the...
- Q minimum deviation takes place 2 60 45 30 4 75 A ray of light is incident at angle of 60 on one face of a prism which has an apex...
- Q 100 3 During the head on collision of two masses 1 kg and 2 kg the maximum energy of deformation is collision the masses are moving in the opposite direction...
- Q Two identical balls A and B having velocities of 0 5 ms and 0 3 ms respectively collide elastically in one dimension The velocities of B and A after the...
- Q In the figure given the position time graph of a particle of mass 0 1 kg is shown The impulse at t 2 s is x m 4 2 2...
- Q A block of mass m is resting on a piston as shown in figure which is moving vertically in an SHM of period 1 s The minimum amplitude of motion...
- Q 24 2 7 kg 3 17 kg 4 3 kg The force F acting on a particle of mass m is indicated by the force time graph shown below The...
- Q If two soap bubbles of radius 2 cm and 4cm respectively are combined in vacuum in isothermal conditions to form a single soap bubble then radius of combined soap bubble...
- Q A simple pendulum 50 cm long is suspended from the root of a cart accelerating in the horizontal direction with constant acceleration 3g m s The period of small oscillations...
- Q 3 14 0 x 10 N 4 1 75 x 10 N Two particles of masses m and m in projectile motion have velocities and i respectively at time t...
- Q 1 A 2C 2 A 2C 3 A A ray of monochromatic light is incident on one refracting face of a prism of angle 75 It passes through the prism...
- Q A quantity of heat Q is supplied to a diatomic gas which expands at constant pressure The fraction of heat supplied that contributes to the change in internal energy of...
- Q An ideal gas has 3 rotational degrees of freedom and 3 translational degrees of freedom The ratio of molar specifi heat of the gas at constant pressure to that at...
- Q 1 300 2 45 3 A ray of light is incident at angle i on a surface of a prism of small angle A and emerges normally from the opposite...
- Q 6 What should be the value of distance d so that final image is formed on the object itself focal lengths of the lenses are written on the lenses 1...
- Q A ball collides with an inclined plane of inclination 0 after falling through a distance h If it moves horizontally just after the impact the coefficient of restitution is 1...
- Q Mass 1 kg body explodes into three fragments The ratio of their masses is 1 1 3 The fragments of same mass move perpendicular to each other with speeds 30...
- Q 4 90 cm 2 180 cm 3 45 cm 4 360 cm A thick plane mirror shows a number of images of the filament of an electric bulb Of these...
- Q A mass of 100g strikes the wall with speed 5m s at an angle as shown in figure and it rebounds If the contact time is 2 x 10 sec...
- Q 10 What the number that measures an object s resistance to being deformed elastically when stress is applied to it a Elastic modulus b Plastic modulus c Poisson s ratio...
- Q Water rises upto a height h in a capillary tube on the surface of the earth Th value of h will increase if the experimental setup is kept in g...
- Q 13 Some structural members subjected to a long time sustained loads deform progressively with time especially at elevated temperatures What is such a phenomenon called a Fatigue b Creep c...
- Q 1 28 ms On a frictionless surface a block of mass M moving at speed v collides elastically with another block of same mass M which is initially at rest...
- Q 14 The straight wire AB carries a current I The ends of the wire subtend angles 8 and 8 at t point P as shown in figure The magnetic field...
- Q Three waves of equal frequency having amplitude 10 m 4 um and 7 um arrive at a given point with successive phase 7 difference of The amplitude of the resulting...
- Q A hiker stands on the edge of a cliff 490 m above the ground and throws a stone horizontally with a speed of 15 m s1 The time taken by...
- Q 46 Which of the following relation s is are always correct p linear momentum dv dm dp dt 4 F m v dv dm dt dt dt dt of more...
- Q 6 The body will regain it is ious shape and size only when the deformation caused by the external forces is within a certain limit What is that limit a...
- Q ALL the equivalent resistance between the points A and D Infinite ladde 1 100 A 220 2 3 30 2 4 40 2 C In the circuit sho 10 CA...
- Q 3 change in pressure 4 change is heat A The volume of a gas is reduced to 1 4 of its initial volume adiabatically at 27 C The final temperature...
- Q A 50 g bullet moving with velocity 10 m s strikes a block of mass 950 g at rest and gets embedded into it The loss in kinetic energy will...
- Q Find the heat energy required to raise the temperature of n moles of a gas from To to 2To if its molar heat capacity varies as shown in the diagram...
- Q 9 What kind of elastic materials are derived from a strain energy density function a Cauchy elastic materials b Hypo elastic materials c Hyper elastic materials d None of the...
- Q What will be the acceleration due to gravity at a point which is at the distance R from 4 Earth s centre R is radius of earth go is acceleration...
- Q Given the velocity function v t 5cost 5sint 2t a Find the position function wherer 0 0 0 7 Answer b Find the magnitude of the net force of the...
- Q 010 Ideal gas in a closed container initially having volume V and pressure P If the final pressure is 4P and volume is kept constant what is the ratio of...
- Q 8 As the elastic limit reaches tensile strain a Increases more rapidly b Decreases more rapidly c Increases in proportion to the stress d Decreases in proportion to the stress
- Q Two blocks of masses 10kg and 4kg are connected by a spring of negligible mass and are placed on a frictionles horizontal surface An impulse gives a speed of 14...
- Q A shell explodes in a region of negligible gravitational field giving out n fragments of equal mass m Then its total 1 Kinetic energy is smaller than that before the...
- Q 2 486 J 3 524 J 4 324 J A shell of mass 200 g is ejected from a gun of mass 4 kg by an explosion that generates 1...
- Q Cooking gas containers are kept in a lorry moving with uniform speed The temperature of the gas molecules inside will 47 2 decrease 273 remain same 4 decrease for some...
- Q A gas undergoes a process in which its pressure P and volume V are related as VP constant The bulk modulus the gas in the process is 1 nP 2...
- Q 2 Two similar thin equi convex lenses of focal length feach are kept coaxially in contact with each other such that the focal length of the combination is F When...
- Q Let V1 be the frequency of first line of Lyman series and V2 be the frequency of first line of Balmer series then the frequency of second line of Lyman...
- Q An incident ray strikes a medium whose relative refractive index with respect to surrounding is 3 at grazing angle 30 If the refraction and reflection both take place at the...
- Q 1 m of a gas is compressed suddenly at atmospheric pressure and temperature 27 C such that its temperatu becomes 627 C The final pressure of gas will be y...
- Q 14 Find the strain of a brass rod of length 100mm which is subjected to a tensile load of 50KN when the extension of rod is I equal to 0...
- Q Q11 Agas is taken through an adiabatic process in which the volume changes from an initial value of 1600 cc to 400 cc If initial pressure of the gas was...
- Q When two bodies collide elastically the force of interaction between them is conservative 2 non conservative 3 either conservative or non conservative 4 zero
- Q Morning breakfast gives 5000 cal to a 60 kg person The efficiency of person is 30 The height upto which the person can climb up by using energy obtained from...
- Q A charge of Q1 8 0 pC is distributed uniformly on a spherical surface radius R 0 02 m and a second charge of Q2 3 0 PC is distributed...
- Q A small ball of mass m and radius r 10 rolls without slipping along the track shown in the figure The radius of circular part of the track is R...
- Q Two masses are connected by a spring as shown in the figure One of the masses was given velocity v 2 k as shown in figure where k is the...
- Q Two circular plates of radius 0 2 m are used to form a parallel plate capacitor displacement current between the plates is ampere then the magnetic field produced by displacement...
- Q 144 A astronomical telescope has objective and eyepiece of focal lengths 40 cm and 4 cm respectively To view an object 200 cm away from the objective the lenses must...
- Q Q5 The figure gives the free body diagram when several forces act on an object pulling it along a frictionless flat floor What will be the direction of acceleration of...
- Q Mark correct option or options 1 Mutual gravitational attraction between two bodies can be considered as impulsive force during collision 2 Collision is process in the absence of impulsive force...
- Q For total internal reflection to occur which of the following is correct Light travels from rarer to denser medium Light travels from denser to rarer medium Light travels in air...
- Q Q2 A man fires a bullet standing between two cliffs The first echo is heard after 3 seconds and the second echo is heard after 5 seconds If the velocity...
- Q 0 The equivalent capacitance between the terminals X and Y in the figure shown will be 1 100 pF X 200pF 200pF 100pF Y 2 200 pF 100pF 100pF 100pF...
- Q 29 A thin disk of radius R is held closing the opening of a thin hemispherical shell of the same radius Both the bodies are made of insulating materials and...
- Q Q1 The pressure at a depth of 700 m in the ocean is around 7 kPa By how much does the volume of 0 2 m aluminum cube contract when...
- Q 16 In another world instead of the Coulomb s law electric force F on a point like charge q due to another point like charge Q is found to obey...
- Q A nonconducting ring of mass m and radius R is charged as shown The charged density i e charged per unit length is It is then placed on a rough...
- Q 28 In a standard YDSE set up performed with light of wavelength 600 nm one of the slits is covered with a transparent sheet of thickness 12 0 m and...
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