Explanation

• The first compound microscope is believed to have been invented around 1590.
• It was developed by the Dutch spectacle makers Hans Janssen and his son Zacharias Janssen.
• Their invention used two lenses to magnify tiny objects.

Additional information:

• Galileo Galilei – 1609 improved the microscope design
• Robert Hooke – 1665 observed cork cells and wrote Micrographia
• Antonie van Leeuwenhoek – 1674 discovered microorganisms
• Joseph Jackson Lister – 1830 improved modern compound microscope

Last verified on 13-03-2026

Explanation

a:b = 4:9

b:c = 3:5 = 9:15 (multiply by 3)

a:b:c = 4:9:15

Last verified on 13-03-2026

Explanation

Total parts = 6+7+8 = 21

Max share = (8/21) × 105000 = 40000

Last verified on 13-03-2026

Explanation

An arc is a curved portion of the circumference of a circle.

It is formed between two points on the circle’s boundary.

Last verified on 13-03-2026

Explanation

• Miss means کسی چیز کو مارنے، پہنچنے، یا اس کے ساتھ رابطے میں آنے میں ناکام ہونا
• Hit means کسی کے ہاتھ یا ہتھیار کو کسی یا کسی چیز کے ساتھ جلدی اور زبردستی سے رابطہ میں لانا یا کسی ہدف تک پہنچنا

Last verified on 13-03-2026

Explanation

• Strive means بڑی کوشش کرنا، جدوجہد کرنا، یا بہت کوشش کرنا
• Rest means آرام کرنے کے لیے کام یا نقل و حرکت بند کرنا

Last verified on 13-03-2026

Explanation

• Nearest means قریب ترین
• Farthest means سب سے دور

Last verified on 13-03-2026

Explanation

• Asleep means غیر فعالیت یا نیند کی حالت
• Resting means غیر فعالیت یا نیند کی حالت

Last verified on 13-03-2026

Explanation

Cost of 5 pens = Rs. 50.75

Cost of 1 pen = 50.75 / 5 = Rs. 10.15

Last verified on 13-03-2026

Explanation

• The Moon's surface gravity is about 1/6th as powerful or about 1.6 meters per second.
• The Moon's surface gravity is weaker because it is far less massive than Earth.
• A body's surface gravity is proportional to its mass, but inversely proportional to the square of its radius.

Last verified on 13-03-2026