Question # 1

The loudness of sound is most closely related to its:

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Freqeucy

Period

Wavelength

Amplitude

the resistance of an ammeter should be:

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high

very high

low

constant

Value of ‘k’ depends upon:

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System of unit

Nature of medium

Both a and b

None of these

Radioactive isotopes present in atmosphere is

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Cobalt -60

Ph-32

Carbon -14

Carbon -20

Power of electric heater is:

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1500W

4750W

100W

50W

The basic operations performed by a computer are:

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Arithmetic operations

Non-arithmetic operations

Logical operations

Both a and c

After how much time the echo must be heard?

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0.1 s

0.10 s

0.20 s

0.50 s

Which waves of the following has highest frequency?

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Radio waves

Micro waves

Light wave

Sound wave

The output of a two input NOR gate is 1 when:

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A is 1 and B is 0

A is 0 and B is 1

Both a and b are 0

Both a and b are 1

The unit of (ρ) in formula R=ρ.L/a is______________.

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Ω

Ω-m

Ω-m²

Ω-m^-2

After refraction from a convex lens, rays of light parallel to the principal axis converge at a point, this point of convex lens is called:

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Principal focus

Pole

Focal length

Optical center

First voice signal was transmitted in the form of electrical signal in:

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1870

1875

1876

1880

Public address system is the example of :

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Analogue electronics

Digital electonics

Binary system

None of these

The resistance of conductors is due to:

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Protons

Fixed atoms

Molecules

Neutrons

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