Explore topic-wise InterviewSolutions in Current Affairs.

How many 176 W resistors (in parallel) are required to carry 5 A in 220 V line?

Name the electrical property of a material whose symbol is "omega".

A cart of mass 'M' is at rest on a frictionless horizontal surface and a pendulum bob of mass 'm' hangs from the roof of the art. The string breaks, the bob falls on the floor, makes several collisions on the floor and finally lands up in a small slot made in the floor. The horizontal distance between the string and the slot is L. Find the displacement of the cart during the process ?

Current through wire $\text{XY}$ of circuit shown is

Explain the meaning of the statement the power of an appliance is 100 W.

Give a statement on Joule law of heating

Define the term principle foci of a convex lens and illustrate your answer with the aid of proper diagrams.

Label the eye parts correctly.

i) Aqueous humour ii) vitreous humour iii) cornea iv) iris v) pupil

Sun appears red at sunrise and sunset. This is due to light having _________ getting scattered away.

A proton projected in a magnetic field of
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$0.02\text{T}$ moves along a helical path of radius
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$5\text{cm}$ and pitch
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$20\text{cm}$. Find the componet of velocity parallel to the magnetic field. Take the mass of the proton $1.6\times {10}^{-27}\text{kg}$

The ability of the eye to form an image on the retina by adjusting the focal length of the eye lens based on the position of the object is called _____.

Question 18
A chapati maker is a machine which converts balls of dough into chapatis. What effect of force comes into play in this process?

A wire of resistance $6\Omega$ is cut into three equal pieces, which are joined to form a triangle. The equivalent resistance between any two corners of the triangle is:

A rectangular slab of refractive index $\mu$ is placed over another slab of refractive index 3, both slabs being identical in dimensions. If a coin is placed below the lower slab, for what value of $\mu$ will the coin appear to be placed at the interface between the slabs when viewed from the top

What should be the angle of incidence for a ray of light which suffers a minimum deviation of ${36}^{\circ }$​ through an equilateral prism?

1. 0.241

A battery of 9 V is connected in series with resistors of 0.2 Ω, 0.3 Ω, 0.4 Ω, 0.5 Ω and 12 Ω, respectively. How much current would flow through the 12 Ω resistor?

How much electrical energy flows through a wire in 1 second when the power is 1 kW?

A thin prism $P_1$ with angle $4^{\circ }$ and made from glass of refractive index $1.54$ is combined with another thin prism $P_2$ made from glass of refractive index $1.72$ to produce dispersion without deviation.The angle of the prism $P_2$ is

A resistance of 12 ohm is connected in parallel with another resistor X. The resultant resistance of the combination is 4.8 ohms. What is the resistance X in ohms?

Why are most of the thermal power plants located near coal mines?

At what temperature velocity of sound in air is 1.5 times the velocity at 7 degree celcius?

A total reflecting right angled isosceles prism can be used to deviate a ray of light through :

(a) ${30}^{\circ }$ (b) ${60}^{\circ }$ (c) ${75}^{\circ }$ (d) ${90}^{\circ }$

What are domains in magnetism ?

Match the given cases of image formation with the position of the object:

Two protons exerts a nuclear force on each other, the distance between them is

A $4\Omega$ and a $2\Omega$ coil are connected in parallel. What is their combined resistance ? A total current of 3 A passes through the coils. What current passes through the $2\Omega$ coil?