List of top Questions asked in KCET- 1998

When 2 equal resistances are connected in parallel to the poles of a cell of negligible internal resistance, the power developed is P. When the same resistances are connected in series across the same cell, the power developed is

A device, in which electrical energy is converted into chemical energy, is called:

Device used to measure very high temperature is

Frequency of the series limit of Balmer series of hydrogen atom in terms of Rydberg constant $R$ and velocity of light $c$ is

The development of sporophyte from vegetative cells of gametophyte is called:

A point charge $A$ of charge $+4 \mu$C and another point charge B of charge $-1 \mu\,C$ are placed in air at a distance $1\, metre$ apart. Then the distance of the point on the line joining the charges and from the charge $B$, where the resultant electric field is zero, is (in metre)

Bright colours exhibited by spider's web, exposed to sun light are due to

In an ideal transformer, the voltage and the current in the primary are 200 V, 2A and that in the secondary are 2000 V, I A. The value of I is (A)

Light of certain wavelength and intensity ejects photoelectrons from a metal plate. Then this beam is replaced by another beam of smaller wavelength and smaller intensity. As a result

A galvanometer has a resistance G and a current flowing in it produces full scale deflection. \(S_1\) is the value of the shunt, which converts it into an ammeter of range \(0-I\) and \(S_2\) is the value of the shunt for the range \(0-2I\). The ratio is

$P, Q$ and $R$ are three coplanar forces acting at a point and are in equilibium. Given $P=1.9318\, kg\, wt$ $\left[\sin \theta_{1}=0.9659\right]$, the value of $R$ (in $kg$ wt) is

Choke used to limit high frequency A.C. has

One mole of an ideal gas undergoes a cyclic change ABCD. From the given diagram calculate the net work done in the process. (1 atm = $10^6\,dyne\,cm^{-2}$) is

A voltmeter has a range 0-V with a series resistance R. With a series resistance 2 R, the range is 0-V'. The correct relation between V and V' is

Kirchhoff's voltage law is based on the law of conservation of

Velocity of light, according to this theory, is greater in a denser medium than in a rarer medium

A mirror produces a magnified erect image of an object. The nature of the mirror is

Numerical aperture of an oil immersion objective using oil of R.I. 1.5 is 0.75. Then, its numerical aperture, when kept in air is

Time of exposure for a photographic print is 10 s, when a lamp of 50 cd is placed at 1 m from it. Then another lamp of luminous intensity I is used, and is kept at 2 m from it. If the time of exposure now is 20 sec, the value of I is (cd)

The number of degrees of freedom for each atom of a monatomic gas is

The magnifying power of a simple microscope M is given by

A stone of mass 1 kg tied to the end of a string of length 1 m, is whirled in a horizontal circle, with a uniform angular velocity 2 radian/sec. The tension of the string is (N)

A light body A and a heavy body B have equal linear momentum. Then the K.E. of the body A