This practice AIEEE test is designed to prepare you for the actual AIEEE Physics section.
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The time period of a simple pendulum of infinite length is …........ Given : = radius of earth.
A disc-like wheel with massless thread unrolls itself while falling vertically downwards. The acceleration of its fall is
0
g
A toy-cart is tied to one end of an unstretched string of length x. When revolved, the toy-cart moves in a horizontal circle of radius 2x with a time period T. When the speed of the toy-cart is so increased that it moves in a horizontal circle of radius 3x, its time period is T’. the value of T’ is
T
A long horizontal rod has a bead which can slide along its length and initially placed at a distance L from one end A of the rod. The rod is set in angular motion about A with constant angular acceleration . If the co-efficient of friction between the rod and the lead is and gravity is neglected, then the time after which the bead starts slipping is
inifinitesimal
A gramophone disc is revolving with an angular velocity . A coin is placed at a distance r from the centre of the disc. The static co-efficient of friction is . The coin will revolve with the record if
The fraction of the floating object of density above the surface of liquid of density will be
A particle executing S.H.M. between x = – A and x = + A. The time taken for it to go from 0 to A/2 is and to go from A/2 to A is . Then
In LCR series AC circuit, the voltage across each of the components L, C and R is 50V, the voltage across the LC combination will be
zero volt
50 V
100 V
If the intensity of radiation incident on a photocell be increased four time then number of photo-electrons and energy of photo-electrons emitted become
four times, double
four times, remain unchanged
double, remain unchanged
remain unchanged, doubled
The work function of a substance is 4.0- eV. The longest wavelength of light that can cause photo-electron emission from this substance is approximately
220 nm
310 nm
540 nm
400 nm
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