Explore topic-wise InterviewSolutions in Current Affairs.

A nuclear power plant is working normally. What would you do if the reactor core suddenly got too hot ?

Name the unit which is commonly used for expressing the energy released in nuclear reactions.

Which one of the following is a type of power generator?

What is the primary source of energy for the chemical energy stored in fossil fuels?

If in a circuit we have a battery of 5v connected to a resistor of 5Ω. 2 batteries are added of same Potential difference. and polarity the current also increases in the same manner. What are the (I, v) values?

Which of the following are isobars?

A boy weighs 600N on the Earth. What would be his weight on the moon?

If a 4120Ca atom undergoes a β emission, then the value of Z isand A isin the daughter nucleus.

Arabari forest of Bengal is dominated due to: (a) Teak (b) Sal (c) Bamboo (d) Mangrove

Light is a form of an invisible ___ .

Explain the terms 'adaptation' and 'accommodation' with reference to the eye.

Name some sources of direct current.

A ray of light gets dispersed into visible spectrum [VIBGYOR], when it is passed through a prism. Which color wavelength deviates the most?

What is the potential difference between the terminals of a battery if 250 joules of work is required to transfer 20 coulombs of charge from one terminal of a battery to the other?

Show analytically that an object placed between the pole and focus of a concave mirror produces a virtual and enlarged image. [2 MARKS]

Question 5 The refractive index of diamond is 2.42. What is the meaning of this statement?

The figure below shows a DC motor. Labe the parts B and S and Name the principle on which it works

What is the minimum temperature difference required between the water at the surface and 2 km depth to efficiently operate ocean thermal energy conversion plants?

What is green house effect? What are primary greenhouse gases? [3 MARKS]

Is it practically possible to convert a form of energy completely into the other useful form? Explain your answer.

The driver of a truck is taking a turn to the right. What are the signs ( +ve or -ve) of the moments applied by (a) right hand (b) left hand (c) both hands together?

Electric potential difference between two points in an electric circuit carrying some current is the _____ done to move a ______ charge from one point to the other.

The resistance of a wire, of length 'l', is RΩ. The wire is stretched to double its length keeping the volume constant. The resistance of the wire will become?

Give some more examples for convex mirror ?

For the myopic eye, the defect is cured by

Name the material of the core in: (a) an electric bell, (b) an electromagnet (c) a D.C motor (d) an A.C. generator (e) a transformer.

21472A→ 0−1e +

Stars appear to be higher in the sky than actually they are because of

The substances which lose their resistance completely at very low temperature are called __

(a) Write down the formula for the heat produced when a current I si passed through a resistor R for time t. (b) An electric iron of resistance 20 ohms draws a current of 5 amperes. Calculate the heat produced in 30 seconds.

For the circuit shown in the following diagram, What is the value of 1. current through 6Ω resistor? 2. potential difference across 12Ω ? [3 MARKS]

A uniform wire with a resistance of 27Ω is divided into three equal pieces and then they are joined in parallel. Find the equivalent resistance of the parallel combination.

A telescope made of mirrors is used to observe the moon. It forms the inverted image of the moon at 3.5 km from the eye piece. Find the diameter of the image of the moon. Given the diameter of the moon is 1700 km and the distance of the moon from the earth is 350,000 km.

State the effect of increase of pressure on the melting point of ice.

Refraction of light as it enters from water to air is due to________.

State the effect of force F in each of the following diagrams (a) and (b).

After reflection through a concave mirror, rays of light

Miranda, one of the moons of the planet Uranus, orbits the planet with an average speed of 6.5 km s−1, while experiencing a centripetal force of 2×1019 N. What is the distance (in km) between Uranus and Miranda, if the moon has a mass of 6.4×1019 kg?135200

Explain this diagram [3 MARKS]

Write the full form of : (i) LPG, and (ii) CNG.

Marching of soldiers in a parade is an example of a ___.

Diodes can be used for making :

Choose the correct option which can represent Snell's law for a given set of media of air and water. Here n, θ represents the refractive index of the medium and the incident angle respectively.

What is the difference between electric field and magnetic field?

What do you mean by elementary charge? What is its charge? What is the SI unit of current? [3 MARKS]

Why do clouds appear white while sky appears blue?

State the principle of working of ocean thermal conversion plant. Explain how the plant works? Write one essential condition for it to operate properly.

Equal quantity of heat is supplied to two substances A and B. Substance A shows a greater rise in temperature. What can be concluded about the heat capacities of the two bodies?

What is the safest voltage you can put across a 98 Ω,0.5 W resistor?

Electric potential difference between two points in an electric circuit carrying some current is the _ done to move a __ charge from one point to the other.