Explanation

فتح مکہ کے موقع پر حضرت عباس رضی اللہ عنہ کی سفارش پر حضور اکرم صلی اللہ علیہ وآلہ وسلم نے ابو سفیان کو معاف فرما دیا۔

حضرت عباس، نبی اکرم صلی اللہ علیہ وآلہ وسلم کے چچا تھے اور ابو سفیان کو اسلام قبول کرنے میں بھی ان کا اہم کردار تھا۔

Explanation

Explanation

Dispersion occurs when white light passes through water droplets in the atmosphere, causing the light to spread out into its component colors (spectrum).

Each color of light bends by a different amount due to their different wavelengths, resulting in the formation of a rainbow.

Explanation

Discount percentage = (Discount / Original Price) * 100

Discount = Rs. 2.50

Original Price = Rs. 50

Discount percentage = (2.50 / 50) * 100

= 5%

Explanation

The Communist Revolution in China succeeded in 1949 under the leadership of Mao Zedong.

The People's Republic of China was officially established on October 1, 1949.

Explanation

The refractive index of ice is approximately 1.31, which is slightly less than that of water (1.33).

This means light travels a bit faster in ice than in liquid water.

Explanation

She requested her sister to help her in completing her assignment.

"Said to" with "please" changes to "requested" in indirect speech.

Pronouns change appropriately: me → her, keeping the meaning intact.

Explanation

The x-coordinate is negative and the y-coordinate is positive → (-1, √2).

This combination (−, +) always lies in Quadrant II.

Explanation

The square root of any real number is never negative, so √x = -10 has no real solution.

Hence, the solution set is empty, written as { }.

Explanation

When the left ventricle contracts, it pumps oxygenated blood into the aorta.

This blood is then distributed to the entire body through systemic circulation.