Physics question and answers for June 29, 2024
- Q A uniform sphere of charge of radius 1 0 m and charge per unit volume p 2 0 C m is kept with its centre at the origin A spherical...
- Q The refractive index of the glass prism shown in the figure is 2 for green light a ray of cyan colour light is incidence a tp on the face bc...
- Q 0 Consider the two statements related to circular motion in usual notations A In uniform circular motion and a are always mutually perpendicular B In non uniform circular motion v...
- Q A photon of energy 4 eV is incident on a metal surface whose work function is 2 eV The minimum reverse potential to be applied for stopping the emission of...
- Q The horizontal component of earth s magnetic field at a place is 4 x 10 4 T and dip is 45 A metal rod of length 20 cm is placed...
- Q 52 Which of following statements is TRUE 1 Any physical quantity which has magnitude and direction both must be a vector 2 A vector does not change if it is...
- Q According to Lenz s law of electromagnetic induction The induced emf in the direction opposing the change in magnetic flux The relative motion between coil and magnet produces no change...
- Q 36 A coil of inductance 5H is joined to a cell of emf 6V through a resistance of 10 2 at t 0 The potential difference across the coil at...
- Q Projectile A particle is projected at angle 0 with horizontal from ground The slop m of the trajectory of the particle varies with time t as 1 m m 2...
- Q A particle of mass m is attached to three identical springs A B and C each of force constant k as shown in figure If the particle of mass m...
- Q What is the fundamental frequency of a musical instrument if the frequency of the 5th overtone is 240 Hz Instruction Write only number Do not write unit
- Q A man moves in an open field such that after moving 10 m on a straight line he makes a sharp turn of 60 to his left The total displacement...
- Q 63 A particle accelerates from rest at a constant rate for some time and attains a velocity of 8 m Afterwards it decelerates with the constant rate and comes to...
- Q Two masses m and 2m are connected by a string passing over a pulley fixed at the top of an inclined plane The first mass moves vertically downwards drawing the...
- Q The figure shows a network of currents The magnitude of currents is shown here The current I will be A a 3 A Oa is correct Ob is correct Oc...
- Q Focal length of a thin convex lens is 30 cm At a distance of 10 cm from the lens there is a plane refracting surface of refractive index Where will...
- Q If an aircraft travels with a speed of 325 m s in air at 25 C its Mach number will be Use Speed of sound in air at 0 C...
- Q Water is filled to a height of 18 0 m deep in a storage tank whose top is open to the atmosphere What are the absolute pressure at the bottom...
- Q Two particles A and B start moving with velocitie 20 m s and 30 2 m s along x axis and at an angl 45 with x axis respectively in...
- Q The specific heat of vaporization of water is about 2 260 kJ kg What is the energy needed to vaporize 0 65 kg of water Select one O a 3477...
- Q 11 A particle performing SHM is found at its equilibrium at t 1 sec and it is found to have a speed of 0 25 m s at t 2...
- Q A helicopter has a mass m and maintains height by imparting a downward momentum to a column of air defined by the slipstream boundary as shown in the figure The...
- Q If the natural frequency of a string is 250 Hz the wavelength of the sound wave produced will be Use Speed of sound 340 m s Select one a 1...
- Q An insulated sphere of radius R has a uniform 44 R volume charge density p The electric field at a point P inside the sphere at a distance r from...
- Q 61 15 The surface tension of a liquid is given as T a02 be where a and b are constants and 9 is absolut temperature Dimensions of a and b...
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