List of top Physics Questions asked in KCET

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
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
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
A mirror produces a magnified erect image of an object. The nature of the mirror 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
An electric bulb marked $40\, W$ and $200\, V$, is used in a circuit of supply voltage $100\, V$. Now its power is
Colour of light having maximum speed in air is
Two resistances $R_1$ and $R_2$ have effective resistance $R_s$ when connected in series and $R_p$, when connected in parallel. If $R_s R_p=16$ and $R_1/R_2=4$, calculate the values of $R_1$and $R_2$ (in units of resistance).
A point source of light produces an illumination $I$ at a point. When the distance between them is made four times its original value, the intensity at that point becomes
Calculate the current I in the circuit shown
A dark pattern on a China dish appears brighter than the rest of the dish, when it is strongly heated and taken to a dark room. This is an illustration of
A beam of light is passed through a polaroid and the latter is rotated with the beam of light as axis. The intensity of the emergent light varies between a maximum and minimum. Then the light used is
At $0\, K$ temperature, a $p$ - type semiconductor
Siemens is a unit of
AB is a uniform wire of resistance $2000\,\Omega$ and C is the midpoint of Ag^A voltmeter of resistance $1000\,\Omega$ is connected between A arid B.. Then the reading of the voltmeter, when the p.d. is applied across AB is 150 V, is
Optically active substance among the following is