
Resistance of a wire that must be placed parallel with a 12 Ω resistance to obtain a combined resistance of 4 Ω is

2 Ω

4 Ω

6 Ω

8 Ω


Aeroplane was invented by

Nicolas

Valta

Orville and Wilbur Wright

Ampere


What is the principle of thermopile?

Peltier effect

Seeback effect

Zeeman effect

Compton effect


The speed of light in ait is

3*10^8 m/s

3*10^8 m/s

8*10^3 m/s

Infinity


According to kepler’s first law of planetary motion, planets move in

Straight lines

Elliptical orbits

Circular orbits

A parabola


A substance is colored due to the absorption of

U.V. light

I.R. radiation

Microwave radiation

Visible light


The ratio of the linear stress to the linear strain of a body is called

Rigidity modulus

Young’s modulus

Bulk modulus

Hooke’s modulus


For the same total weight and the same fuel supply a multistage rocket is preferred to a single stage rocket, because

It is cheaper to build a multistage rocket

It is easier to assemble a multistage rocket

The final velocity achieved by a multistage rocket is higher

Multistage rocket is safe to launch


27°c can be expressed as

250 k

200 k

400 k

300 k


When two resistors, each of value 10 Ω, are connected in parallel, what is the effective value of the combination?

5 Ω

4 Ω

6 Ω

7 Ω

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