Explanation

• Insolent means showing disrespect or behaving in a rude and arrogant manner.
• Rude means impolite, disrespectful, or offensive.
• Insolent means بے عزتی کرنا یا بدتمیزی اور متکبرانہ انداز میں برتاؤ کرنا
• Rude means غیر مہذب، بے عزتی، یا جارحانہ

Last verified on 03-11-2026

Explanation

• Impassioned means showing or expressing strong emotions or intense feelings.
• Ardent means having intense passion, enthusiasm, or strong feelings.
• Impassioned means مضبوط جذبات یا شدید جذبات کا اظہار یا اظہار کرنا
• Ardent means شدید جذبہ، جوش، یا مضبوط جذبات کا ہونا

Last verified on 03-11-2026

Explanation

• Ambition means a strong desire or determination to achieve something.
• Desire means a strong wish or longing for something.
• Ambition means کسی چیز کو حاصل کرنے کی مضبوط خواہش یا عزم
• Desire means ایک مضبوط خواہش یا کسی چیز کی خواہش

Last verified on 03-11-2026

Explanation

Passage: The vast multitudes of stars are wandering about in space. A few forms group which journey in company, but the majorities are solitary travelers. And they travel through a universe so spacious that it is an event of almost unimaginable rarity for a star to come anywhere near to another star. For the most part each voyages in splendid isolation, like a ship on an empty ocean. In a scale model in which the stars are ships the average ship will be well over million miles from its nearest neighbour, whence it is easy to understand why a ship seldom finds another within hailing distance.

Which of the following is incorrect according to the passage?

A. Some stars travel in group

B. Most of the starts travel in isolation

C. The universe in very large

D. A star very rarely comes near to another one

In the passage the "ship" symbolizes? Star

Last verified on 03-11-2026

Explanation

Formula of parallel plate capacitor:

C = ε₀ x A / d

Where:

C = capacitance = 1 F

ε₀ = permittivity of free space = 8.85 x 10⁻¹² F/m

A = area of plates = ?

d = distance between plates = 1 mm = 0.001 m = 10⁻³ m

We need A:

A = C x d / ε₀

Put values:

A = 1 x 10⁻³ / 8.85 x 10⁻¹²

A = 10⁻³ / 8.85 x 10⁻¹²

A = (1 / 8.85) x 10⁹

A = 0.1129 x 10⁹

A = 1.129 x 10⁸

A ≈ 1.13 x 10⁸ m²

Last verified on 03-11-2026

Explanation

Kinetic Energy = 1/2 x m x v^2

m of electron = 9.1 x 10^-31 kg

v = 10^6 m/s

KE = 0.5 x 9.1 x 10^-31 x (10^6)^2

KE = 0.5 x 9.1 x 10^-31 x 10^12

KE = 4.55 x 10^-19 J

Convert J to eV:

1 eV = 1.6 x 10^-19 J

Energy in eV = 4.55 x 10^-19 / 1.6 x 10^-19

Energy = 2.84 eV

Last verified on 03-11-2026

Explanation

• Solid-state detectors detect ionizing radiation by producing electrical signals when radiation interacts with semiconductor material.
• Wilson cloud chambers make the tracks of charged particles visible, helping identify their paths and behaviour.
• Geiger tubes detect ionizing radiation by producing electrical pulses, but they do not directly measure the mass or charge of a particle.

Last verified on 03-11-2026

Explanation

• Cobalt-60 is a radioactive isotope that emits high-energy gamma rays.
• These gamma rays are used in radiotherapy to destroy cancer cells by damaging their DNA.
• Cobalt-60 has been widely used in external-beam cancer treatment, although modern radiotherapy also uses linear accelerators.

Last verified on 03-11-2026

Explanation

• A transistor operates when it is properly biased and a suitable voltage is applied across its terminals.
• In a bipolar junction transistor (BJT), the emitter injects charge carriers into the base region.

Last verified on 02-11-2026

Explanation

• A lattice array is a regular, repeating arrangement of points representing the positions of atoms, ions, or molecules in a crystal.

Additional information:

• A unit cell is the smallest repeating structural unit that can generate the entire crystal lattice.
• A lattice constant is a parameter describing the dimensions of the unit cell, such as its edge lengths.

Last verified on 02-11-2026