Question # 1

The half of carbon 14 is

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5720 years

5730 years

5740 years

5750 years

The product of frequency and time period is equal to:

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v

0

1

L

The disturbance travelling in a medium is called:

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Wave motion

Simple harmonic motion

Motion

both a and b

Each volt of lightening contains energy:

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4x10⁶ joules

1000 joules

1000 million joules

10 joules

When a ray of light enters from denser medium to rare medium, the angle of incidence for which angle of refraction is 90^o is called:

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angle of incidence

critical angle

angle of refrection

None of these

When resistances are connected in parallel, the current passing through them is:

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Same

Zero

Different

Infinite

The centre of spherical mirror is called:

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Focus

Axis

Centre

Pole

Which of the following is an insulator:

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Copper

Iron

Silk

Silver

If the displacement in spring is ‘x’ of mass “m” attached with a spring then restoring force is:

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F=ma

F=kx

F=-kx

F= m/a

The loudness of sound is most closely related to its:

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Freqeucy

Period

Wavelength

Amplitude

waves whose speed is equal to speed of light are:

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X-rays

sound rays

electromagnetic waves

shock waves

Eight bits combine to form:

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A byte

Megabyte

Kilobyte

Gigabyte

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10th Class Physics English Medium KPK Boards Online Mcqs MCQs With Answers

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