Question # 1

Boher proposed his atomic model in:

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1910

1911

1912

1913

The galvanometer can be made sensitive by making the factor BAN/C

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Large

Small

Constant

Zero

The energy equivalent of 1 kg of matter is about:

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10^-15 J

1 J

10^-12J

10^-17J

The effective value of any sinusoidal alternating current or voltage is

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None of the above

The toner of printer is given

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Positive charge

Negative charge

Neutral

First positive then negative

Thermosouple is an arrangement of two different metals:

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Two convert heat energy into electrical energy

To produce more heat

To convert heat energy into chemical energy

To convert electrical energy into heat energy

Nuclear fission chain reaction is controlled by using.

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Cadmium rods

Iron rods

Platinum rods

Steel rods

The SI unit of magnetic permeability is.

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WbA-1m-1

Wbm-2

WbmA-1

WbAm-1

Which is true for both alpha particle and gama rays.

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They cause ionization in air

They can be deflected by electric field

They can be deflected by magnetic field

The y can penetrate a few millimeters of aluminium

When platinum wire is heated, it changes to cherry red at temperature.

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500^oC

900^oC

1100^oC

1300^oC

In full wave rectification number of diodes required are equal to.

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2

3

4

5

5 A of current flows through a conductor in 2 minutes, charge in the wire is.

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500 C

600 C

400 C

10 C

The Unit of decay constant.

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Second

(second)-1

m-1

mk

Alpha particle carries a charge.

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-e

+2e

-2e

No charge

The use of LDR is in the circuit of.

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Logic gate

Rectifier

Oscillator

High Switch

Radioactivity happen due to the disintegration of

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Nucleus

Mass

Electrons

Protons

By modern system of NAVSTAR, the speed any where on the earth can be determined to accuracy about.

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20 ms-1

10 ms-1

2 cms-1

2 ms-1

If the ionization energy of hydrogen atom is 13.6 eV, its ionization potential will be

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136.0 volt

3.0 volt

13.6 volt

None of these

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