VIVA questions


VIVA Questions from Krishnam Raj sir.

Simple Pendulum

    • What is a simple Pendulum?  Answer
    • What is a seconds Pendulum?  Answer
    • What is the nature of oscillations of simple pendulum?  Answer
    • What is the length of the simple pendulum?  Answer
    • What is the shape of the l-T graph of simple pendulum?  Answer
    • What is the shape of the l- T^2 graph of a simple pemdulum ?  Answer
    • Does a simple pendulum stop finally? Why?  Answer
    • what is time period of simple pendulum  Answer
    • what is the relation between the period of simple pendulum and acceleration due to gravity?  Answer
    • The relationship between the period of a simple pendulum and the length of pendulum  Answer
    • What is an oscillation?  Answer
    • what is the frequency of simple pendulum?  Answer
    • Is the period of a simple pendulum is dependent of the amplitude of oscillation?  Answer

Surface Tension

    • Define surface tension?  Answer
    • If the diameter of the capillary tube is doubled what will happen to rise of liquid ?  Answer
    • What are cohessive and adhessive forces ? Give examples  Answer
    • what is the direction of the surface tension?  Answer

Sound Velocity

    • Define resonance ?  Answer
    • Out of solids , liquids, and gasses through which medium sound propagate more ?  Answer
    • Either the sound waves are longitudinal or transverse?  Answer
    • Waht are transverse waves ?  Answer
    • What are longitudinal waves?  Answer


    • state the laws of strings.  Answer

Helical Spring

    • what are the units of force constant?  Answer
    • Either spring force is conservative or not ?  Answer
    • What is simple homonic motion ?  Answer
    • What is periodic motion ?  Answer
    • What is oscilatory motion ?  Answer
    • All periodic motions are hormonic .is this statement true .why?explain with example  Answer
    • find out least count of screw guage vernier and spherometer?  Answer
    • pitch= distance travelled by screw/No. of full rotations given.
    • L.C=pitch/NO. of head scale divisions
    • length of object=M.S.D+(V.S.D*L.C)
    • radius of curvature=d^2/6h+h/2
    • surface tension=r(h+r/3)g/2
    • height of curvature=n*pitch+(I.C.S.R-F.C.S.R)*L.C ,I.C.S.R>F.C.S.R
    • height of curvature=n*pitch+({100*I.C.S.R}-F.C.S.R)*L.C ,I.C.S.R,F.C.S.R

Boyl's Law

    • state boyle's law ?

    • What is the shape of the (h-l)/l graph ?

    • How can you find the atmospheric pressure from h-l)/l graph?

    • What is the shape of the P-l graph?

    • At what conditions the Boyle's law is true ?

    • In the verification of Boyle's law it is proved that P*l = constant instead of P*V = constant . Why ?

    • The air coloumn should not be touched with the hand during the experiment . Why?

    • For every change of reservior wait for some time and note the reading . Why?