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dielectric constant of vacuum isa infinityb 100c oned zeroansdielectric constant of vacuum is
germanium possessesa one valence electronsb two valence electronsc three valence electronsd four valence electronsansgermanium possesses four valence
materials which provide a path to the magnetic flux are classified asa insulating materialsc magnetic materialsb semi conducting materialsd
the si unit of pressure is the a torrb dyne per centimeter squaredc atmosphered pascalansthe si unit of pressure is the
two vibrating particles that are out of phase differ in the phase of their vibration bya 14 cycleb 12 cyclec 34 cycled 1 cycleans two vibrating
as a pendulum is raised to higher altitudes its perioda increasesb decreasesc remains the samed decreases and then remains the sameanswhen a pendulum
as a longitudinal wave moves through a medium the particles of the mediumw vibrate in a path parallel to the path of the wave x vibrate in a path
as a 10 kilogram mass on the end of a spring passes through its equilibrium position the kinetic energy of the mass is 20 joules the speed of the
if the distance between the earth and moon were halved the force of the attraction between them would be a one fourth as greatb one half as greatc
two steel balls are at a distance s from one another as the mass of one of the balls is doubled the gravitational force of attraction between them
the value of g the universal gravitational constant was measured experimentally bya newtonb cavendishc copernicusd kepleransthe value of the
the time needed for a net force of 10 newtons to change the velocity of a 5 kilograms mass by 3 meterssecond is a 15 secondsb 6 secondsc 167 secondsd
an impulse of 10 kilogram-meters per second acting on an object whose mass is 5 kilogram will cause a change in the objects velocity ofa 05 meters
a worker lifts a 10 kilogram block a vertical height of 2 meters the work he does on the block isa 5 joulesb 20 joulesc 49 joulesd 200 joulesans the
a 10 kilogram mass rests on a horizontal frictionless surface a horizontal force of 5 newtons is applied to the mass after the force has been
a concave lens when given in air has a focal length of 04 m and has a refractive index of 32 evaluate its focal length when immersed in water of
determine the real position of an air bubble in a glass cube of side 03m if the bubble seems to be at a distance of 005 m from one face and at 015m
a convex lens of refractive index 15 of focal length 02m is immersed in water of refractive index 133 determine the focal length of lens in
a luminous point object is placed at a depth of 05m inside a liquid a circular patch of light of radius 005675 m is prepared on the surface
a ray of light is incident on one of the faces of a parallel sided glass slab at an angle of incidence 510 31 of thickness 012 m evaluate the
focal length of convex lens is 01 m a liquid lens is formed between a plane surface and one face of this lens of radius of curvature 012m the
an equiconvex lens has the radius of one curved surface is 012 m and focal length of 010 m determine the refractive index of the material of the
a glass sphere of radius 15 cm has a small air bubble at a distance of 6 cm from its centre when viewed normally along its diameter from the nearest
a transparent glass cube of side 20 cm has a small air bubble when it is viewed normally from the nearest face it seems to be at 005 cm from that
a small air bubble is placed 004 m inside a glass sphere of refractive index 15 when viewed normally from outside it is seen at a depth of 003 m