Explanation

• "Badr" means "full moon" in Arabic.
• The Battle of Badr, also called Furqan.
• The Battle of Badr is also known as The Day of the Criterion.
• Day of the Criterion means کسوٹی کا دن
• It took place on Tuesday, 13 March 624 CE (17 Ramadan, 2 AH) near the city of Badr.
• Prophet Muhammad SAW, commanding his Sahaba, defeated the Quraysh army led by Abu Jahl (Amr ibn Hishām).
• The Kufar forces numbered 1,000.
• It was the first battle of Islam, with 313-317 Muslims.
• The Muslim forces included 82-85 Muhajirun and 231 Ansar (61 from Aws and 170 from Khazraj).
• They had 2 horses and 70 camels.
• Fourteen Muslims were killed, while 70 Kufar were killed and 70 captured.
• Surah Al-Anfal mentions that Allah promised to reinforce the Muslims with 1,000 angels.

Explanation

Optical fiber uses the optical principle of "total internal reflection" to capture the light transmitted in an optical fiber and confine the light to the core of the fiber.

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RY 15-01-2023

Explanation

This is the typical concentration in a healthy person during fasting.

The normal blood glucose level is about 80–100 mg/dL, which is roughly 0.08% of the blood by weight.

0.8% and 0.7%:

These are closer to the correct range but still slightly higher than what is typically considered normal. 

7.5%:

This is significantly higher than the normal range and would indicate a serious medical condition like diabetes. 

Explanation

5 ! = 5 × 4 × 3 × 2 × 1 = 120 ways.

Explanation

Bacteriophages are viruses that infect bacteria and are typically much smaller than other viruses like adenoviruses.

While adenoviruses range in size from 70-90nm, bacteriophages can be as small as 20nm. 

Explanation

x³ + 1/x³ = (x + 1/x)³ − 3(x + 1/x)  

= 3³ − 3×3

= 27 − 9

= 18

Explanation

tan A + tan B = √2 + 1

Explanation

When two dice are rolled, there are 36 possible outcomes

The outcomes that result in a sum of 7 are (1,6), (2,5), (3,4), (4,3), (5,2), and (6,1), which are 6 in total.

So, the probability of getting a sum of 7 is 6/36 = 1/6.

Explanation

We know:

81 = 3⁴  

So,  

log₃ 81 = log₃ (3⁴) = 4

Explanation

To find the resultant of two forces acting at right angles, use the Pythagorean theorem:

Resultant = √(3² + 4²) = √(9 + 16) = √25 = 5N