Physics | MCQs

Explanation

• In 1979, Dr. Abdul Salam won the Nobel Prize for physics.
• He was the second Muslim scientist to get Nobel Prize.
• He was belonged to Pakistan.
• He was died in 1996.

Explanation

In 1979,  Dr. Abdul Salam won the Nobel Prize for physics.

He was the second Muslim and first Pakistani scientist to get the Nobel Prize.

He won 12 Awards with his wife.

1. Copley Medal: 1990
2. Royal Medal: 1978
3. Hughes Medal: 1964
4. Pride of Performance: 1958
5. Nishan-e-Imtiaz
6. Adams Prize: 1958
7. Lomonosov Gold Medal: 1983
8. Atoms for Peace Award
9. Gold Medal for Outstanding Contributions to Physics: 1981
10. Smith's Prize for Essay: 1950
11. Jožef Stefan Medal: 1980
12. Cristoforo Colombo Prize: 1992

Additional information 

As of 2018, there have been two Pakistanis who have won the Nobel Prize.

• First was Pakistani physicist Abdus Salam
• Second was Malala Yousafzai

ND5-07-2023

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

To find the self-inductance of a coil, we can use the formula:

L = (ΔΦ / ΔI)

Where:

L is the self-inductance in Henry (H),

ΔΦ is the change in magnetic flux in Weber (Wb),

and ΔI is the change in current in Ampere (A).

In this case, the current changes from 5A to 0A (nil) in 5 seconds. (ΔI) is therefore 5A - 0A = 5A.

To find the change in (ΔΦ), we can use Faraday's law of electromagnetic induction

ΔΦ = L * ΔI

Since the current changes from 5A to 0A in 5 seconds, the rate of  (ΔI) is 5A / 5s = 1A/s.

Substituting the values into the equation:

ΔΦ = L * ΔI

500 V = L * 1 A/s

Since the (V) is equal to  (L) and  (ΔI), we can rewrite the equation as:

L = 500 V / 1 A/s

Simplifying the equation gives us:

L = 500 H

Therefore, the self-inductance of the coil is 500 Henry (H).

Explanation

In order to keep balance, it is important to have the feet between the centre of gravity and the centre of the Earth.

In case of climbing upwards, it is necessary to lean forward in order to keep the feet straight below the centre of gravity.

Explanation

Dr. Abdul Qadeer was born on 1st April 1936 in Bhopal, India

Prof Dr Ahmad Al-Ghazali offer the funeral prayer of Dr. A Q Khan

What was the title given to Dr Abdul Qadeer Khan? Mohsin-e-Pakistan

Dr Abdul Qadeer Khan died on 10 October 2021, at the age of 85 after being transferred to a hospital in Islamabad with lung problems.

Tehreek-e-Tahaffuz-e-Pakistan (TTP) was a political party in Pakistan founded and led by nuclear scientist Abdul Qadeer Khan.  In September 2013, the party was dissolved by Abdul Qadeer Khan.

Explanation

Levitate means روحانی قوت سے ہوا میں اڑنا

Float means تیرنا

Explanation

Momentum means رفتار

Power means طاقت

Explanation

 Convert the speeds of the trains from km/h to m/s

1 km/h = 1000 m/3600 s

Speed of the first train = 60 km/h = (60,000 m/3600 s) m/s = 16.67 m/s.

Speed of the second train = 45 km/h = (45,000 m/3600 s) m/s = 12.50 m/s.

Relative speed = Speed of the first train - Speed of the second train = 16.67 m/s - 12.50 m/s = 4.17 m/s.

Distance = Length of the second train = 500 meters.

Using the formula:

Distance = Speed × Time

Time = Distance / Relative speed = 500 meters / 4.17 m/s = 120.05 seconds.

To convert the time from seconds to minutes, we divide by 60:

Time in minutes = 120.05 seconds / 60 = 2 minutes (approximately).

Therefore, the first train will cross the second train after approximately 2 minutes.

Explanation

He shows great ability in Mathematics.

Sara shows great ability in Physics.

We use "in" in the phrase "ability in Physics" because "in" is the correct preposition

"Ability in" + subject/field

"In" indicates the area where the ability exists.