Basic materials used in the present solid state electronic devices like diode, transistor, ICs, etc are
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Referring to the Young’s double slit experiment, Phase difference corresponding to a Path Difference of λ /3 is
The electrostatic field due to a point charge depends on the distance r as 1/r2 . Indicate which of the following quantities shows same dependence on r.
An object is placed at a distance u from a concave mirror and its real image is received on a screen placed at a distance of v from the mirror. If f is the focal length of the mirror, then the graph between 1/v versus 1/u is
Shown in figure is a Post Office box. In order to calculate the value of external resistance, it should be connected between
A coil carrying electric current is placed inuniform magnetic field, then [1993]
Carbon disulfide (n = 1.63) is poured into a container made of crown glass (n = 1.52). What is the critical angle for internal reflection of a ray in the liquid when it is incident on the liquid-to-glass surface?
Express which of the following set ups can be used to verify Ohm’s law?
Three identical blocks of masses m = 2 kg are drawn by a force F = 10.2N with an acceleration of 0.6 ms-2 on a frictionless surface, then what is the tension (in N) in the string between that blocks B and C ?
[AIEEE 2002]
An element has configuration 4d55s2. The element belongs to
The reaction of an element A with water produces combustible gas B and an aqueous solution of C. When another substance D reacts with this solution C also produces the same gas B.D also produces the same gas even on reaction with dilute H2SO4 at room temperature. Element A imparts golden yellow colour to Bunsen flame. Then A,B,C and D may be identified as
The orbital angular momentum for a d-orbital electron is given by
Gibbs free energy change for a cell reaction is positive what does it indicates?
(Yellow ppt) T X Y. (Yellow ppt) + Z (pungent smellinggas)
If X gives green flame test. Then, X is :
Glucose solution is one molal. Glucose present in 1 kg glucose solution is
The area bounded by the curve y = 2x - x2 and the line x + y = 0 is
The number of arbitrary constants in the particular solution of a differential equation of third order are:
The binary relation S = Φ (empty set) on set A = {1, 2, 3} is
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