PH | MCQs

Explanation

The theory of relativity usually encompasses two interrelated theories by Albert Einstein:

special relativity and general relativity, proposed and published in 1905 and 1915

E =mc2

 C in this equation Velocity of light

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Principle of Theory of relativity

ND27122022

Explanation

Explanation

The Reconstruction of Religious Thought in Islam is  delivered by Muhammad Iqbal

 published in 1930.

Explanation

Know about Allama Iqbal

Born: November 9, 1877 (Sialkot)

Father: Sheikh Noor Muhammad

Mother: Imam Bibi

Received PhD: Germany

The Development of Metaphysics in Persia was the title of Allama Iqbal’s PhD Thesis

Title: Poet of the East

Famous books: Bang-e-Dara, Zarb-i-Kalim, Armughan-e-Hijaz

Famous Punjabi Books/Poem: Piyaara Jedi, Baba Bakri Wala

Died: 21 April 1938

Burial: Badshahi Mosque in Lahore

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ND22-1-2023

Explanation

Explanation

Studies show that it takes an average of 8 minutes and 20 seconds for sunlight to move from the sun to the earth.

Sunlight moves at the speed of light.

You can see that the distance of the sun from the earth = 149.6 x 106 km.

Photons emitted from the surface of the sun need to traverse the vacuum of the universe to reach our eyes.

Explanation

Joule is a unit of work or energy or heat.

Joule is a scalar quantity.

Explanation

Radioactivity was discovered by Henri Becquerel in 1896

They discovered radioactivity proving that the uranium emitted radiation without an external source of energy such as the Sun

Marie Curie with her husband Pierre Curie, coined the term radioactivity 

in 1903, Henry Becquerel shared the Nobel Prize for Physics with Pierre and Marie Curie

Ernest Rutherford did many experiments studying the properties of radioactive decay (alpha, beta, and gamma)

Explanation

Vector Quantities: Velocity, momentum, torque, acceleration.

Scalar Quantities: Work, distance, speed, mass.

Explanation

Rule of thumb is an idiom.

Rule of thumb means rough estimate.

Rule of thumb means سرسری اندازہ