List of practice Questions

Unpolarized light falls on two polarizing sheets placed one on top of other. If the intensity of transmitted light is one fourth of the incident light, the angle between them is
When an object is placed $40\,cm $ from a diverging lens, its virtual image is formed $20\,cm$ from the lens. The focal length and power of lens are
What will be the freezing point of $1\%$ solution of glucose in water, given that molal depression constant for water is $ 1.84\,K\, mol^{-1}$
Which type of isomerism is exhibited by $\left[ Pt \left( NH _{3}\right)_{2} Cl _{2}\right]$ ?
A particle moving in a circular path has an angular momentum of L. If the frequency of rotation is halved, then its angular momentum becomes
When a solution of sodium hydroxide is added to acetic acid solution, the conductivity of the resulting solution will
Which of the following species has a trigonal planar shape?
The most stable oxidation state of lanthanides is
Which of the following is least reactive to nitration?
How many numbers with no more than three digits can be formed using only the digits $1$ through $7$ with no digit used more than once in a given number?
The angle between the linear momentum and angular momentum of a particle in circular motion is
The self-inductance of an air core solenoid of $100$ turns is $1\, mH$. The self-inductance of another solenoid of $50\, turns$ (with the same length and cross-sectional area) with a core having relative permeability $500$ is
A packet is dropped from a flight ascending with a velocity at height of 10 km. If the packet takes 100 s to reach the ground,^then the velocity of the flight is (Take = 10 ms$^{-2}$ )
Pick out the wrong statement
The alternating current in a circuit is given by $ I=50\,\sin \,314\,t $ . The peak value and frequency of the current are
The dimensional formula of electric potential is
The displacement, velocity and acceleration in a simple harmonic motion are related as the
The induced emf in a coil of $10$ Henry inductance in which current varies from $9\,A $ to $4\,A$ in $0.2$,second is
The power $(P)$ of an engine lifting a mass of $ 100\,kg$ up to a height of $ 10\,m $ in $ 1\,\min $ is
Which of the following is not the postulate of the kinetic theory of gases?
Which of the following is an ore of zinc?
Which of the following groups is ortho and para directing?
The transverse nature of electromagnetic waves is proved by which of the following?
The Brewster's law is given by the expression
The conservation of angular momentum demands that