Explanation

Light Year is the distance that light can travel in one year.

The distance light travels in one year is known as light year.

Explanation

At the top of the waterfall, energy is stored in the form of gravitational potential energy

but when it falls, it gets converted from potential to kinetic energy

Potential energy due to the object's height above the Earth is converted to kinetic energy as it falls

Explanation

A voltmeter is used to measure the potential difference (voltage) across two points in a circuit.

It is connected in parallel with the component whose voltage is being measured.

Explanation

We generally use in before evening, morning, afternoon etc. 

In is the preposition here. 

We get up early in the morning ہم صبح جلدی اٹھتے ہیں

Explanation

Natural rubber is made by extracting a liquid sap, called latex.

Latex is gathered from the trees by making a cut in the bark and collecting the runny sap in cups. This process is called tapping.

Largest Country produced Natural rubber

Explanation

Isaac Newton belongs to UK

Explanation

Ductile means نرم

Rigid means سخت

Explanation

• V=f/λ is an expression that holds good for wave velocity
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• The wave velocity of a wave is given by v=fλ 
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• lambda = refers to the wavelength, the distance between the crests in meters (m)
• v = refers to the velocity of the speed of waves moving in a direction in meters per second (m/s)
• f = refers to the frequency, the wave crests that go through a point in certain time cycles per second or hertz (cycles/s or Hz)

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  RY 23-12-2022

  
  

Explanation

I enjoy writing letters.

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Explanation

Be weak in something means کسی چیز میں کمزور ہونا

Be good at something means کسی چیز میں ماہر ہونا