List of practice Questions

In Michelson Interferometer the intensity is expressed as \( 4A^2\cos^2\frac{\delta}{2} \), where \( \delta = \frac{2\pi}{\lambda}(2d \cos\theta) \), d being the distance between Mirrors M₁ and M₂. The intensity is maximum, when \( \delta \) is
Two satellites A and B of mass 'M' are orbiting the earth in circular orbits at altitudes 2R and 5R respectively, where R is the radius of the earth. The ratio of kinetic energies of satellite A and B will be
The condition for bright ring in the Newton's Ring arrangement is (where 't' is thickness of film, m is order and \(\lambda\) is wavelength):
Which of the following is not a characteristic of a laser light?
In order to produce LASER, the correct sequence of processes given below will be
(A) Pumping
(B) Population inversion
(C) Stimulated emission
(D) Light Amplification
Choose the correct answer from the options given below:
If J, E and I are the angular momentum, kinetic energy of rotation and moment of inertia respectively, then which of following is incorrect?
Which of following is true in a LCR circuit?
(A) In purely inductive circuit (R = 0), Quality factor is infinite.
(B) Resistance 'R' is alone responsible for damping of oscillations.
(C) Discharge of capacitor is not oscillatory in character.
(D) Q-factor is measure of sharpness of resonance in case of a driven oscillator.
Choose the correct answer from the options given below:
In a perfectly elastic collision if m₁ and m₂ be the masses and v₁ and v₂ be the velocities of two colliding particles. Then velocity after the collision, if particles stick together will be:
Which of the following is/are correct about conservative and non-conservative forces?
(A) For conservative and non-conservative forces conservation of energy holds good.
(B) Friction is a conservative force.
(C) The work done by a conservative force in a closed path is zero.
(D) Friction is a non-conservative force.
Choose the correct answer from the options given below:
A wave of frequency 500 Hz is travelling with a velocity 1000 m/s. How far are two points situated in wave whose displacement differ in phase by \( \frac{\pi}{3} \)?
Two tuning forks produce 6 beats per second when sounded together. One of the fork is in unison with 1.5 m length of wire and the other with 2.0 m length of wire. The frequencies of forks are:
In common emitter connection, the collector leakage current in a transistor is 300\(\mu\)A. The leakage current in the transistor in common base arrangement will be (Given \(\beta\) = 130):
A power gain of 100 in decibel (db) is:
A moving particle has coordinates (5t + 3, 6t, 5)m in frame S at any time 't'. The frame s' is moving with velocity (3\(\hat{i}\)+4\(\hat{j}\))m/s with respect to the frame S. Velocity of particle in frame s' is:
At a temperature of 47°C the thermal voltage is (Given value of Boltzmann's constant = 1.38 x10\(^{-23}\) joule/°K):
An a. c. supply of 220V is applied to a half wave rectifier through a transformer of turn ratio 20:1. In this circuit the peak inverse voltage is:
Which of following Maxwell's equation shows non existence of magnetic monopoles?
A long coaxial cable carries current 'I' (current flows down the surface of inner cylinder of radius 'r1' and back along the outer cylinder of radius 'r2'). The magnetic energy stored in a section of length 'L' is
The magnetic polarization results in a bound current Jb
(A) which is associated with magnetization of the material.
(B) which involves spin and orbital motion of electrons.
(C) which is the result of linear motion of charge when electric polarization changes.
(D) which is given by \( \nabla \times \vec{M} \) (where \( \vec{M} \) is magnetization).
Choose the correct answer from the options given below:
Match the LIST-I with LIST-II \[ \begin{array}{|l|l|} \hline \textbf{LIST I (Vegetable crop)} & \textbf{LIST II (Variety)} \\ \hline A. \ \text{Radish} & I. \ \text{Pusa Purple Long} \\ B. \ \text{Brinjal} & II. \ \text{Pusa Ruby} \\ C. \ \text{Tomato} & III. \ \text{Pusa Chetki} \\ D. \ \text{Pea} & IV. \ \text{Pusa Pragati} \\ \hline \end{array} \]
Match the LIST-I with LIST-II and choose the correct answer from the options given below: \[ \begin{array}{|l|l|} \hline \textbf{LIST I} & \textbf{LIST II} \\ \hline A. \ \text{Correlation Coefficient value lies between} & I. \ \text{For Getting the Higher Precision} \\ B. \ \text{Standard Deviation} & II. \ \text{Unitless Measure of Dispersion} \\ C. \ \text{Larger Samples} & III. \ \text{-1 to +1} \\ D. \ \text{Coefficient of Variation} & IV. \ \text{Best Measure of Dispersion} \\ \hline \end{array} \]
Match the LIST-I with LIST-II and choose the correct answer from the options given below: \[ \begin{array}{|l|l|} \hline \textbf{LIST I} & \textbf{LIST II} \\ \hline A. \ \text{Correlation Coefficient value lies between} & I. \ \text{For Getting the Higher Precision} \\ B. \ \text{Standard Deviation} & II. \ \text{Unitless Measure of Dispersion} \\ C. \ \text{Larger Samples} & III. \ \text{-1 to +1} \\ D. \ \text{Coefficient of Variation} & IV. \ \text{Best Measure of Dispersion} \\ \hline \end{array} \]
Match the LIST-I with LIST-II and choose the correct answer from the options given below: \[ \begin{array}{|l|l|} \hline \textbf{LIST I (Insect pests of citrus)} & \textbf{LIST II (Scientific name)} \\ \hline A. \ \text{Psylla} & I. \ \textit{Papilio demoleus} \\ B. \ \text{Leaf miner} & II. \ \textit{Diaphorina citri} \\ C. \ \text{Lemon butterfly} & III. \ \textit{Toxoptera aurantii} \\ D. \ \text{Aphids} & IV. \ \textit{Phyllocnistis citrella} \\ \hline \end{array} \]
Match the LIST-I with LIST-II \[ \begin{array}{|l|l|} \hline \textbf{LIST I (Fruit crop)} & \textbf{LIST II (Variety)} \\ \hline A. \ \text{Apple} & I. \ \text{Arka Aruna} \\ B. \ \text{Mango} & II. \ \text{Illiachi} \\ C. \ \text{Ber} & III. \ \text{Red Chief} \\ D. \ \text{Pear} & IV. \ \text{Bartlett} \\ \hline \end{array} \]
Match the LIST-I with LIST-II \[ \begin{array}{|l|l|} \hline \textbf{LIST I (Liming materials)} & \textbf{LIST II (Neutralizing value of CCE \%)} \\ \hline A. \ \text{Calcium oxide (CaO)} & I. \ 86 \\ B. \ \text{Calcium hydroxide [Ca(OH)$_2$]} & II. \ 108.7 \\ C. \ \text{Dolomite [CaMg(CO$_3$)$_2$]} & III. \ 136 \\ D. \ \text{Basic slag (CaSiO$_3$)} & IV. \ 179 \\ \hline \end{array} \]