Explanation

 A hydrophone is a microphone designed to be used underwater for recording or listening to underwater sound.

The hydrophones are based on a piezoelectric transducer.

Explanation

Sound needs a medium (like air, water, or solids) to travel because it moves by vibrating particles.

In a vacuum, there are no particles to vibrate, so sound cannot travel and no sound can be heard.

Explanation

MAWKISH (ضرورت سے زیادہ جذباتی) 

Carefree (بے پرواہ، لاپرواہ)

Explanation

Work done by 10 women in 7 days = 1

Work done by 1 woman in 7 days = 1/10

Work done by 1 woman in 1 day = 1/(10 × 7) = 1/70

Work done by 10 children in 14 days = 1

Work done by 1 child in 14 days = 1/10

Work done by 1 child in 1 day = 1/(10 × 14) = 1/140

Work done by 5 women in 1 day = 5 × 1/70 = 5/70 = 1/14

Work done by 10 children in 1 day = 10 × 1/140 = 10/140 = 1/14

Total work done per day = 1/14 + 1/14 = 2/14 = 1/7

Total days required = 7 days

Explanation

Standing at Arafat (Wuquf at Arafat) is considered the pinnacle and most spiritually significant moment of Hajj.

It occurs on the 9th day of Dhul-Hijjah.

The Prophet Muhammad (peace be upon him) said:

“Hajj is Arafah.”

(Hadith: Sunan al-Tirmidhi)

Explanation

 Looking at the alternating pattern:

• First sequence: 1, 2, 3 (Increasing)

• Second sequence: 3, ?, 7

Checking possible middle value:

• The pattern could follow a doubling sequence: $3 times 2 = 6$

Explanation

DISSOLUTE  راہ رو، بدکردار یا بے اصول۔
Immoral (غیر اخلاقی) 

Explanation

 Greedy is similar in meaning to Selfish → both describe someone who wants more for themselves.

Various is similar in meaning to Diverse → both refer to a range of different kinds.

Explanation

Explanation

A mosquito produces a high-frequency sound, while a lion produces a low-frequency roar.

The difference in frequency is what makes their sounds so distinct to our ears.

Higher frequencies sound more like buzzing or whines, while lower frequencies sound deeper and more powerful.