List of practice Questions

A charged particle moves through a magnetic field in a direction perpendicular to it. Then the
Light year is used to measure
"Parsec" is the unit of
Two bodies, $A$ (of mass $1\, kg$) and $B$ (of mass $3 \,kg$) are dropped from heights of $16\, m$ and $25 \,m$, respectively. The ratio of the time taken by them to reach the ground is:-
Two balls are dropped to the ground from different heights. One ball is dropped $ 2\, s $ after the other but they both strike the ground at the same time. If the first ball takes $ 5\, s $ to reach the ground, then the difference in initial heights is $ (g=10m{{s}^{-2}}) $
Total internal reflection takes place
The worlds highly prized wool yielding Pashmina breed is
A transistor is operated in common emitter configuration at constant collector voltage $ {{V}_{C}}=1.5\,V $ such that a change in the base current from 100 $ \mu A $ to 150 $ \mu A $ produces a change in the collector current from 5 mA to 10 mA. The current gain ( $ \beta $ ) is
The temperature of sink of a Carnot engine is 27?C. If the efficiency of engine be 25%, then the temperature of source must be
In producing chlorine through electrolysis 100 W power at 125 V is being consumed. How much chlorine per min is liberated? Electro chemical equivalent of chlorine is $ 0.367\,\times {{10}^{-6}}\,kg/C $ .
The total energy of an electron in the first excited state of hydrogen is about $- 3.4 \,eV$. Its kinetic energy in this state is
The surface temperature of the Sun which has maximum energy emission at $500 \,nm$ is $6000 \,K$. The temperature of a star which has maximum energy emission at $400\, nm$ will be
The resistance of an ammeter is $ 13 \Omega$ and its scale is graduated for a current upto $100$ amps. After an additional shunt has been connected to this ammeter it becomes possible to measure currents upto $750$ amperes by this meter. The value of shunt-resistance is
The helicotrema is the communicating link between the
The equation of a tangent to the parabola $y^2 = 8x$ is $y = x + 2$. The point on this line from which the other tangent to the parabola is perpendicular to the given tangent is
The artificial system of classification is based on
Select the true statement from the following. Nuclear force is
SA node is located in
Rods and cones are modified
Rh factor in man could be connected to species $\ldots\ldots$ of monkey
Release of second polar body from human egg nucleus occurs
Regeneration in Hydra will be faster if it is cut off from
Rayon is
Propene on hydroboration and oxidation produces
Pleiotropy is the term that refers to situation in which a gene influences more than one trait. Its example is given by