Question # 1

Time period is reciprocal of:

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Frequency

Cycle

Wavelength

Amplitude

in a dry cell, chemical energy changes into:

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mechanical energy

electrical energy

potential energy

kinetic energy

At mean position of pendulum, the potential energy of the pendulum is:

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Maximum

Minimum

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Both a and c

If a charged body is brought near a negatively charged electroscope and the leaves of electroscope diverge, then the body is:

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Positively charged

Negatively charged

Neutral

None of these

Why household appliances should be connected in parallel with the voltage source:

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To increase the resistance of the circuit

To decrease the resistance of the circuit

To provide each appliance the same voltage as the power source

To provide each appliance the same current as the power source

Optical fibres works on the principle of:

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Reflection

Refraction

Total internal reflection

Diffraction

Total energy supplied in driving one coulomb of charge around a complete circuit is called:

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Potential

Potential difference

Electromotive force

Potential energy

The time period of frequency and time period is equal to:

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v

1

0

λ

According to Fleming's left hand rule the direction of force on the conductor is given by:

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Thumb

Fore finger

Middle finger

None of these

The relation between v,f andλ of a wave is:

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vf=λ

fλ = v

vλ =f

v=λ/f

The S.I unit of potential difference is:

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Ampere

Coulomb

Volt

Watt

If a dielectric medium is present between two point charges them electrostatic force will be:

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Increased

Decreased

Vanishes

Remain same

Bouncing back of light after striking the surface is called:

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Refraction

Reflection

Diffraction

Interference

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

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