Physics question and answers for July 28, 2024
- Q In Young s double slit experiment the interference pattern is found to have an intensity ratio between bright and dark fringes as 9 What is ratio of amplitudes of interfering...
- Q The position time graph for two particles A and I are straight lines inclined at angles of 30 and 60 with the time axis The ratio of velocities VA VE...
- Q 2 Only outside 3 Both inside and outside the rod 4 Neither inside nor outside the rod The magnetic intensity near one end of a long solenoid of length L...
- Q A Hollow cylinder having inner radius a and outer radius 3a is having current uniformly distributed across cross section If B Band Bo denotes magnetic field at point A B...
- Q i The potential energy of a particle in a force field is where A and B are positive constants and r is the distance of particle from the centre of...
- Q Charges and Magnetism 105 Two parallel beams of electrons are produced parallel to y axis such that speeds of electrons is v If speed of light is c then ratio...
- Q 12 One face of a rectangular glass plate 6 cm thick is silvered An object held 8 cm infront of the unsilvered face forms an image 6 cm behind the...
- Q At any instant the ratio of amount of radioactive substance is 2 1 If their half lives are respectively 12 and 16 hours then after 2 days what will be...
- Q 85 A population of lotus plants in a pond is 450 in the starting of January 2014 It has a birth rate of 0 2 lotus plant month The number...
- Q Velocity of a particle moving along a straight changes parabolically with time according to the graph shown in figure Then its average velocity in the time internal t 0 to...
- Q Velocity of the ball A after collision with the ball shown in the figure is Assume perfectly inel and head on collision A 5 m s 2 m s O...
- Q 3 A To compensate the relativistic variation of mass at high speed of charge in cyclotron Adjustments can be made is 1 Frequency of a c is decreased 2 Magnetic...
- Q Worth While car A starts with an initial velocity of 10 m s nd an acceleration of 1 m s car B starts from rest with n acceleration of 2...
- Q Consider a circuit of high capacitance and very hight resistance R a battery of emf E and switch S The switch is closed at t 0 At t the heat...
- Q Hint 65 In the circuit shown the value of I in ampere is 492 www www 492 4 V 492 www www 492 1 6 92 www 1 1 2...
- Q A cube of volume 1 m and specific gravity 2 is very slowly being lowered in to a lake with help of a massless string tied to one of its...
- Q Mark the correct statement A The magnitude of the velocity of a particle is equal to its speed B The magnitude of average velocity in an interval is equal to...
- Q Four metallic plates each with a surface area A are placed at a distance d from each other as shown in the figure If points A and B are connected...
- Q A plano concave lens having index of refraction 1 50 is placed on a flat glass plate as shown in Figure P37 64 Its curved surface with radius of curvature...
- Q A particle starts moving from the point 1 2 3 under velocity li 23 3k for two seconds After that it moves under velocity 11 2j 3k for the next...
- Q A particle moves from rest at A on the surface of a smooth circular cylinder of radius ras shown At B it leaves the cylinder The equation relating a and...
- Q A prism of refractive index n and another prism of refractive index n are stuck together as shown in the mothong figure n and no depend on A the wavelength...
- Q 8 Half life of a radioactive substance is 2 34 minute It is produced at a constant rate of 10 nuclei per sec How soon after in minute the beginning...
- Q A uniform chain of length L and mass M is lying on a table and of its length is hanging vertically down over the edge of the table If g...
- Q wo blocks of mass 10 kg and 5 kg are connected with a light string which is assing over an ideal pulley attached with a fixed smooth wedge If the...
- Q A particle is subjected to different types of accelerations in different initial condition position vector at t 0 V initial velocity a acceleration Column I Column II 1 F i...
- Q A soap film n 1 33 is contained within a rectangular wire frame The frame is held vertically so that the film drains downward and forms a wedge with flat...
- Q A battery of emf 20 V is connected to resistances as shown in figure The potential at the point C will be 302 www O 10 V 08V O 6...
- Q Use phasor addition to find the resultant amplitude and phase constant when the following three harmonic functions are combined E sin wt 6 E 3 0 sin wt 77 2...
- Q This section contains 35 O 68 Hz A set of 16 tuning forks are so arranged that each produce 4 beats with the previous one If the frequency of last...
- Q A thin equiconvex glass lens 1 5 of radius of curvature R and a thin plano concave lens u 1 4 are kept in contact and the plane surface is...
- Q In the following figure C 5 F C C 10 F and 20 V Initially the switch S is connected to point A until capacitor C is fully charged Afterwards...
- Q A block of mass m at the end of a string is whirled round in a vertical circle of radius R The critical speed of the block at the top...
- Q Two identical wires are vibrating in unison If the tension in one of the wires is increased by 2 five beats are produced per second by the two vibrating wires...
- Q A plano convex lens has index of refraction n The curved side of the lens has radius of curvature R and rests on a flat glass surface of the same...
- Q Lines of a electrostatic field can t have sudden break in charge free region because A B C D It can t be discontinuous It is imaginary line Gauss s...
- Q A solid uniform bar of diameter d and length 1 is hanging vertically from its free end The elongation of the bar due to self weight is a proportional to...
- Q What is the minimum force that needs to be applied on a body of mass 100 g kept on a horizontal surface to set the body in motion Given coefficient...
- Q a Both sides of a uniform film that has index of refrac tion n and thickness d are in contact with air For normal incidence of light an intensity minimum...
- Q Select incorrect statement regarding mechanical energy of a body system 1 It is sum of kinetic and potential energy 2 It may be conserved even if non conservative force acts...
- Q m SolveLancer Test Choose the correct option When an element X undergoes 5 p decays and a decay the daughter nucleus is given by SolveLancer Test n a b c...
- Q Lateral magnification of objective of compound microscope is 100 and angular magnification of its eyepiece is 20 The magnifying power of compound microscope is 1 120 2 5 3 2000...
- Q Review problem A flat piece of glass is held stationary and horizontal above the flat top end of a 10 0 cm long vertical metal rod that has its lower...
- Q A circuit consists of a resistor of 50 a capacitor of 1 F and an ideal self inductor of 0 01H All three are in series with a power supply...
- Q Magnetic flux in Webers linked with a closed circuit of resistance 10 varies with time t in seconds as 5 t 4t 1 The induced emf in the circuit at...
- Q Many cells are transparent and colorless Structures of great interest in biology and medicine can be practically invisible to ordinary microscopy An interference microscope reveals a difference in index of...
- Q An insulated box containing a diatomic gas of molar mass M is moving with a velocity v The box is suddenly stopped The resulting change in temperature is 1 3...
- Q Internal forces acting in a system of particle can change 1 The kinetic energy but not linear momentum of the system 2 Neither linear momentum nor kinetic energy of the...
- Q A cube of side a has charge q at two diagonally opposite vertices as shown in the igure The net electric potential at the centre of the cube will be...
- Q A coherent parallel beam of light of wavelength 5000 is incident normally on the plane of slits The slit S is covered with a slab of refractive index 1 5...
- Q An object of mass 2 93 kg moving with an initial velocity of 5 07 i m s collides with and sticks to an object of mass 3 00 kg...
- Q mathongo mathongo mathango Amathonge Q9 27 July 2021 Shift 2 The expected graphical representation of the variation of angle of deviation d with angle of incidence i in a prism...
- Q In a Young s double slit experiment using light of wave length a thin piece of Plexiglas having index of refrac tion n covers one of the slits If the...
- Q mathongo mathongo A ray of light passing through a prism suffers minimum deviation It is found that the hongo mathor mahongo mathor angle of incidence is double the angle of...
- Q point Two capacitors C 4 F and C 7 F are connected across a 40 V battery The battery is removed and plates of opposite sign are connected Find the...
- Q Q7 25 July 2021 Shift 2 A ray of light entering from air into a denser medium of refractive index as shown in figure The light ray suffers total internal...
- Q 41 In the indicator diay am shown for an ideal gas the heat exchange between the gas and surrounding is zero for process OA The heat exchange will be negative...
- Q 111 If E G and K denote the young s modulus modulus of rigidity and bulk modulus for an elastic material then which one of the followings can be possibly...
- Q Identify the correct statement O A neutron is formed by an electron and a proton combining together Therefore it is neutral Mass of an electron is about 1840 times that...
- Q A beam of unpolarized light of intensity lo is passed through a polaroid A and then through another polaroid B which is oriented so that its principal plane makes an...
- Q Acceleration a of a particle moving in a straight line varies with its velocity v in m s as a 2 2 v m s Find the maximum possible speed...
- Q 4 Relative error 8 The dimensions of solar constant energy falling on earth per second per unit area are 1 MOLOTO 3 ML T 2 MLT 4 MT
- Q A bimetallic strip made of steel and brass each of thickness 2 8 mm heated through 200 C abrass 19x10 6 C a steel 1 It bends with concave side...
- Q One radio transmitter A operating at 60 0 MHz is 10 0 m from another similar transmitter B that is 180 out of phase with A How far must an...
- Q 45 A physical quantity P is given by the relation If t denotes the time the dimensions P P of constant a are 1 T 3 IT 1 2 1...
- Q 9 The amount of heat energy Q used to heat up a substance depends on its mass m its specific heat capacity s and the change in temperature AT of...
- Q Consider N coherent sources described as follows E Eosin wt b E Eosin wt 24 E3 Eosin wt 36 EN Eo sin wt No Find the minimum value of for...
- Q A P V diagram for a thermodynamic process is shown in the figure If T TB then choose the correct option during the process PA 3Po Po V 0 B...
- Q 86 Units and Measurements 18 The frequency of vibrations f of a mass m suspended from a spring of spring constant K is given by a relation of type f...
- Q India s Superlatives Match the following and mark in the box given below A B 1 Longest River 2 Longest Road 3 Fastest Train 4 Smallest State 5 Largest Residence...
- Q SolveLancer Test A particle of mass m moves with a variable acceleration a which changes with distance covered x along a straight line as a k x where k is...
- Q questions Each question has 4 choices 1 2 3 and 4 out of which only one is correct A particle is thrown vertically up with velocity 10 m s from...
- Q The distance travelled by a particle is directly proportional to where this time elapsed Which of the following is correct regarding the motion of the particle Particle is moving with...
- Q minimum angle of deviation is also A then in terms of refractive index mothongo mathoriga mothonga mathongo mathonnomathango 1 2 cos 9 2 sin mathongs mathango mathongemathongo mathongo mathongozion mathongo...
- Q A parallel plate capacitor A of capacitance 1 F is charged to a potential drop 100 volt and then disconnected from the battery Now the capacitor A is completely filled...
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