Explore topic-wise InterviewSolutions in Current Affairs.

The longest and the shortest distance of a planet from the sun is $R_1$ and $R_2.$ Distance from sun when the radius vector of the planet is normal to the major axis of the orbit is:

In the letter $E$ whose dimensions are given in the figure, origin is at the bottom left corner. Area of each rectangle is $12{\text{cm}}^2$ and area of the square is $4{\text{cm}}^2$. Assume that the weights are proportional to areas. Then, centre of gravity of the $E$ frame will be at:

It is found that yellow light does not eject photoelectrons from a metal. It is advisable to try with __ light. (orange/green)

In young's double-slit experiment, we get $60$ fringes in the field of view of monochromatic light of wavelength $4000\mathring{\text{A}}.$ If we use monochromatic light of wavelength $6000\mathring{\text{A}},$ then the number of fringes obtained in the same field of view are

A brick weighing 4.0 kg is dropped into a 1.0 m deep river from a height of 2.0 m. Assuming that 80% of the gravitational potential energy is finally coverted into thermal energy, find this thermal energy in calorie.

Question 9

Why should an electrician use rubber gloves while repairing an electric switch at your home? Explain.

A geostationary satellite is orbiting the earth at a height of $6R$ above the surface of the earth, where $R$ is the radius of the earth. The time period of another satellite at a height of $2.5R$ from the surface of the earth is ______________ hours.

A particle of unit mass undergoes one-dimensional motion such that its velocity varies according to

$v\left(x\right)=\beta x^{-2n}$

where $\beta$ and $n$ are constants and $x$ is the position of the particle. The acceleration of the particle, as a function of $x$, is given by

A thin film of width $5\mu \text{m}$ and refractive index $\mu =1.5$ is placed in front of one of the sources of light having wavelength $\lambda =5000\mathring{\text{A}}$. The distance between both the sources is $d=5\text{mm}$ and a screen is placed at a distance of $D=2\text{m}$ from the sources. Find the fringe shift and no. of fringes shifted.

Two gases $A$ and $B$ having same pressure $P$, volume $V$ and temperature $T$ are mixed. If the mixture has volume and temperature as $V$ and $T$ respectively, then the pressure of the mixture will be :

If 2 moles of an ideal monoatomic gas at temperature $T_0$ is mixed with 4 moles of another ideal monoatomic gas at temperature $2T_0$ in a closed vessel, then the temperature of the mixture is

Two thin dielectric slabs of dielectric constants $K_1$ and $K_2(K_1<K_2)$ are inserted between plates of a parallel plate capacitor, as shown in figure. The variation of electric field $E$ between the plates with distance $d$ as measured from plate $\text{P}$ is correctly shown by

The ratio of the weight of a man in a stationary lift and when it is accelerating downward with uniform acceleration $a$ is $3:2$. The value of $a$ is (Acceleration due to gravity is $g$ )

A bar magnet of length $3\text{cm}$ has point $A$ and $B$ along its axis at distance of $24\text{cm}$ and $48\text{cm}$ on the opposite sides, as shown in the diagram. Ratio of magnetic fields at these points will be,

Third overtone of a closed organ pipe is equal to the second harmonic of an open organ pipe. Then the ratio of their length is equal

1. 25

Find the equivalent capacitance of given circuit between the points $\text{A}$ and $\text{B}$?

$($Take the capacitance of each capacitor as $C=12\mu \text{F})$

Find the distance covered by a particle during the time interval $t=0$ and $t=6\text{s}$ for which the speed time graph is shown in figure

In the combination of the following gates, the output Y can be written in terms of inputs A and B as

A plane square loop PQRS of side 'a' made of thin copper wire has 'n' turns and it carries a direct current 'I' ampere in the direction shown in the adjoining figure. This wire loop is placed in a magnetic field of flux density 'B' tesla, which is directed perpendicularly in to the plane of the loop. What is the torque acting on the loop?

A solid uniform cylinder of mass $M$ and radius $R$ is pivoted at its centre free to rotate about horizontal axis. A massless inextensible string is wrapped around it, and attached to a block of mass $m$ which is initially at a height $h$ above the floor. The acceleration due to gravity is $g$, directed downward. The block is released from rest. By what total angle $\theta$ does it rotate (in radians)?

If $\overrightarrow{A}\cdot \overrightarrow{B}=|\overrightarrow{A}\times \overrightarrow{B}|$, then what is the angle between $\overrightarrow{A}$ and $\overrightarrow{B}$?

A graph for an ideal gas at constant volume is plotted by taking pressure along y - axis and centigrade temperature along x - axis as shown in the figure below. Find the x intercept of the graph.

1. 46.58

If the length of second's pendulum is decreased by 2%, how many seconds it will lose per day

The optimum speed of a car is $v_0$ and maximum permissible speed to avoid slipping is v on a circular track of radius r which is banked at an angle ${\theta }_0$ if $\mu$ is the coefficient of friction and $\alpha =\frac{v_0}{v}$, then $\mu =$

A particle executes simple harmonic motion between x = -A and x = +A. The time taken for it to go from 0 to A/2 is $T_1$ and to go from A/2 to A is $T_2.$ Then