Explanation

• Light travels in a straight line.
• It is also known as a rectilinear path.
• It in a homogeneous medium like air or vacuum.

Explanation

The renewable energy sources are:

• Water energy
• Wind energy
• Tidal energy
• Hydroelectric
• Ocean energy
• Geothermal energy
• Biomass
• Biogas

The non-renewable energy sources are:

• Fossil fuels or Hydrocarbon fuel (Oil, Natural gas, Coal)
• Nuclear energy

Explanation

Then, Ahmed's age after 15 years $=(x+15)$ years.
Ahmed age of 5 years back $=(x-5)$ years.
Given, $(x+15)=5(x-5)$
$x+15=5x-25$
$5x-x=15+25$
$4x=40$

Explanation

طیبات سے مراد وہ چیزیں ہیں جو پاکیزہ، حلال اور جائز ہوتی ہیں۔

قرآن میں بھی "طیبات" کا ذکر حلال اور پاکیزہ کھانے کے لیے آتا ہے۔

Explanation

An element with 7 valence electrons needs 1 more electron to complete its octet.

Therefore, its valency is 1, as it tends to gain 1 electron during bonding.

Explanation

Amnesty means pardon, excuse, reprieve.

Amnesty means عام معافی

Forgiveness means معافی

For example:

He was freed under the terms of amnesty.

Explanation

Move to the end of a text box. Ctrl+End

Move to the beginning of a text box. Ctrl+Home

ND21-2-2023

Explanation

Let's find the purchase price (cost price):

Selling price = Rs 25,000

Loss percentage = 20%

Let the cost price be x.

Since Naeem suffered a 20% loss:

Selling price = Cost price - Loss

25,000 = x - 0.20x

25,000 = 0.80x

Divide both sides by 0.80:

x = 25,000 / 0.80

x = 31,250

Explanation

Alliteration is a literary device in which words that start with the same sound or letter are repeated in close proximity to each other, typically in a phrase or sentence.

Examples include "sweet silver slippers" or "fluffy friendly felines".

Explanation

Chlamydomonas moves using two flagella, which help in swimming.

Flagella are whip-like structures that enable movement in water.