List of practice Questions

The velocity of a transverse wave in a string is directly proportional to $ \sqrt T $ and inversely proportional to $ \sqrt \mu $ . In a measurement, the mass applied at the end of string is $ 3.0 \,g $ , length of string is $ 1 \,m $ and mass of string is $ 5 \,g $ . If possible error in measuring mass is $ 0.1 \,g $ and that of length is $ 1 \,mm $ , the percentage error in measurement of velocity is
The differential coefficient of $\log_{10} x$ with respect to $\log_{x} 10$ is
An ideal gas undergoes a quasi static, reversible process in which its molar heat capacity Cremains constant. If during this process the relation of pressure $P$ and volume $V$ is given by $PV^n =$ constant, then $n$ is given by (Here $C_P$ and $C_V$ are molar specific heat at constant pressure and constant volume, respectively) :
Two wires having same length and material are stretched by same force. Their diameters are in the ratio $1 : 3$. The ratio of strain energy per unit volume for these two wires (smaller to larger diameter) when stretched is
If the current in the toroidal solenoid increases uniformly from zero to $6.0\, A$ in $3.0?s.$ Self inductance of the toroidal solenoid is $40?H$. The magnitude of self induced emf is

Kepler's second law (law of areas) of planetary motion leads to law of conservation of

The fruit of coconut is:
A battery of constant voltage is available. How to adjust a system of three identical capacitors to get high electrostatic energy with the given battery
Edible fungus is:
The current flowing through the 3$\Omega$ resistor in the circuit is,
Which of the following is true in respect of adsorption?
Which graph shows zero activation energy for reaction ?
2', 3'-Didehydro-3'-deoxy thymidine is the chemical name of which of following antiviral agents
Which of the following drug has not undergone a clinical trial for its use to decrease intracranial pressure
If $\omega$ is an imaginary cube root of unity, then the value of $\left(2-\omega\right)\left(2-\omega^{2}\right)+2\left(3-\omega\right)\left(3-\omega^{2}\right)+.....+\left(n-1\right)\left(n-\omega\right)\left(n-\omega^{2}\right)$
A simple pendulum of length $l$ has maximum angular displacement $\theta$. The maximum kinetic energy of the bob of mass $m$ is ($g =$ acceleration due to gravity)
A series LCR circuit resonates at 10 kHZ. If the capacitor is 0.01 $\mu$F, the inductance used is approximately
The minimum and maximum capacitances, which may be obtained by the combination of three capacitors each of capacitance 6$\mu$ F are
An electron of mass ?m? is accelerated by a potential difference V and the corresponding de-Broglie wavelength is $\lambda$. The de Broglie wavelength of a proton of mass M if it is accelerated by the same potential difference is ,
Light is an electromagnetic wave whose
The equilibrium constant for the reaction $N_{2} +3H_{2} {\rightleftharpoons} 2NH_{3}$ is ?K?. Then, the equilibrium constant for the reaction $2N_{2}+6H_{2} {\rightleftharpoons} 4NH_{3}$ will be
Which of the following compounds is least effective in precipitating $Fe\left(OH\right)_{3}$ sol.?
If $ X=\left\{-2, -1, 0, 1,2,3, 4, 5, 6, 7, 8\right\} $ and $ A=\left\{x : \left|x-2\right|\le3, x \, is\,an\, integer\right\}, $ then $ X-A= $
Chlorobenzene is more reactive than benzene towards the electrophilic substitution reaction. Resonance destabilises the carbocation.
In an oscillator, for sustained oscillations, Barkhausen criterion is $A\beta$ equal to ($A =$ voltage gain without feedback, $\beta =$ feedback factor)