Explore topic-wise InterviewSolutions in Current Affairs.

Explain the concept of electric potential difference in terms of the work done in transferring the charge.

A 25 L sample of nitrogen is heated from ${110}^{\circ }$ C to ${260}^{\circ }$C. What volume will the sample occupy at the higher temperature?

50 g of ice at 0 °C is added to 300 g of a liquid at 30 °C. What will be the final temperature of the mixture when all the ice has melted? The specific heat capacity of the liquid is 2.65 J g^-1 °C^-1 while that of water is 4.2 J g^-1oC^-1 and Specific latent heat of fusion of ice = 336 J g^-1

When an arrow is shot from a bow, it has kinetic energy in it. This kinetic energy is acquired from

State the function of each of the following in a house circuiting :

(a) kWh meter, (b) main fuse, and (c) main switch.

The direction of induced current produced by the change in magnetic flux linked by a coil is obtained by Fleming's ___ -hand rule.

Does electricity gets absorbed in a resistor. If no how does a battery stop working later

For an Ideal gas, the number of moles per liter in terms of its partial pressure (P), Gas constant (R) and temperature (T) is

Why does bursting of balloon produce sound?

A piece of ice of mass 40 g is dropped into 200 g of water at 50${}^{\circ }C$. Calculate the final temperature of the water after all the ice has melted. (Specific heat capacity of water = 4200 J/kg ${}^{\circ }C$, specific latent heat of fusion of ice $=336\times {10}^3$​ J/kg)

In your provided video of Light and Reflection it is said that light remains undeviated after refraction through a glass slab. But in chapter of human eye it is said while refration through a triangular prism the light ray has angle of deviation and the Two rays intersect if extended. And why in diagrams it is shown that light rays bends away or towards in the left of normal, Why not to the right of the normal.

Free Electrons are

A glass flask of volume one litre at $0^{\circ }C$ is filled, level full of mercury at this temperature. The flask and mercury are now heated to ${100}^{\circ }C$. How much mercury will spill out, if coefficient of volume expansion of mercury is 1.82×${10}^{-4}{/}^{\circ }C$ and linear expansion of glass is 0.1×${10}^{-4}{/}^{\circ }C$ respectively

The maximum image distance in case of a concave lens of focal length 'f' is :

The velocity of a freely falling body, starting at rest and after one second is___.

Statement 1: The V-I curve for an ohmic resistor is non-linear.

Statment 2: Ohm's law is not a universal law, the substances which obey ohm's law are ohmic substances.

Among the stakeholders which one of them causes the maximum damage to forest?

According to Einstein's General Theory of Relativity, light can be bend using gravity. Is this scientifically proven ? If yes, then does this defies the rectilinear property of light ? Which property does light show here (ray, particle or wave) ?

To the nearest order of magnitude, how many times greater than the speed of sound is the speed of light?

A car with a steering wheel of radius $25cm$ is rotated with two anti-parallel forces of magnitude $5N$ each. Calculate the moment of the couple.

Question 34
Draw ray diagrams showing the image formation by a convex mirror when an object is placed

(a) at infinity
(b) at finite distance from the mirror

A coolie carrying a load on his head and moving on a frictionless horizontal platform does no work. This is because

A rectangular coil ABCD having a battery connected between its ends A and D is placed in between the pole pieces of a horseshoe magnet as shown. What is the direction of forces on the coil?

The power of a concave lens is 10 D and that of a convex lens is 6 D. When these two lenses are placed in contact with each other, the power of their combination will be : (a) + 16 D (b) + 4 D (c) -16 D (d) - 4 D

Which is correct about Ideal gas?

If T represents the time period of a wave, the time taken for one compression to cross a fixed point will be equal to .

What is the direction of the magnetic field lines surrounding a permanent magnet?

Which of the following is a non-renewable energy resource?

In a hydroelectric power plant, the amount of electric power generated can be increased if water falls from a greater height as:

Which of the following figure has been correctly depicted?

The human eye can focus on objects at different distances by adjusting the focal length of the eye lens. This ability of eye is known as

The specific heat capacity of a body depends on ___.

What is the order of the seven colours (from most deviated to least deviated) that we see after dispersion through a glass prism?

Which of the following is a unit of moment of force?

A boy standing in front of a wall at a distance of 85 m produces 2 claps per second. He notices that the sound of his clapping coincides with the echo. The echo is heard only once when clapping is stopped. Calculate the speed of sound.

When a tube-light rated 220v, 60w is connected across a potential of 220v for 22 seconds then find the charge flowing through it.

A sound wave has a frequency of $1000Hz$ and a wavelength of $34cm$. How long will it take to travel $1km$?

Draw a circuit diagram using the dual control switches to light a staircase electric light and explain its working.

A wave has a wavelength ${10}^{-3}nm$. (a) Name the wave. (b) State its one property different from light.

A solar cell is made up of ______.

If white ray falls on the system as shown in the given diagram, then how many colours will we see after all dispersions have happened?

Which of the following reactions occur during explosion of an atom bomb?

1. 3.2

The equivalent resistance between A & B in the circuit is .