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The correct answer is 1920.

Key Points

• The Non-Cooperation Movement started in 1920.
• The Non-Cooperation Movement is the first mass political movement under Gandhiji.
• The Non-Cooperation movement was approved by the Nagpur session of the Indian National Congress in 1920.
• The main Incidents that leads to Non-Cooperation movements are:
• Jallianwala Bagh Massacre.
• Rowlatt Act.
• Khilafat Agitation.
• The attainment of 'Swaraj' by peaceful means was the main goal of the Non-Cooperation Movement.
• The Non-Cooperation Movement was called off Gandhiji due to the Chauri Chaura incident in 1922.

• Radium is a chemical element with symbol Ra and atomic number 88.
• All isotopes of radium are highly radioactive, with the most stable isotope being radium-226.
• Radium was discovered by Marie Curie(Poland) and Pierre Curie(France) in 1898.

The correct answer is Scanner.

Key Points

• The scanner is an input device, which works more like a photocopy machine.
• It is a device that captures images from photographic prints, posters, magazine pages.
• The scanner captures images from the source which are then converted into a digital form that can be stored on the disk.
• These images can be edited before they are printed.​

Additional Information

• A monitor: 
• It is an output device that is used to display images, text, video, and graphics information generated by a connected computer.
• It is an output device that displays information in pictorial form.
• It is also known as a video display terminal (VDT) or a video display unit (VDU).
• The first computer monitor was introduced on 1 March 1973, which was part of the Xerox Alto computer system.
• Projector:
• A projector or image projector is an optical device that projects an image onto a surface, commonly a projection screen.

The correct answer is Harmanpreet Singh

In News

• Ministry of Youth Affairs & Sports announced the National Sports Awards 2024.

Key Points

• National Sports Awards 2024 Announced
• Ministry of Youth Affairs & Sports announced the National Sports Awards 2024.
• Awardees will receive their awards from the President of India on 17^th January 2025, at Rashtrapati Bhavan.
• Major Dhyan Chand Khel Ratna Award 2024
• Gukesh D (Chess)
• Harmanpreet Singh (Hockey)
• Praveen Kumar (Para-Athletics)
• Manu Bhaker (Shooting)
• Arjuna Awards 2024 (Outstanding performance in sports)
• Athletics: Jyothi Yarraji, Annu Rani
• Boxing: Nitu, Saweety
• Chess: Vantika Agrawal
• Hockey: Salima Tete, Abhishek, Sanjay, Jarmanpreet Singh, Sukhjeet Singh
• Para-Athletics: Rakesh Kumar, Preeti Pal, Jeevanji Deepthi, Ajeet Singh, Sachin Sarjerao Khilari, Dharambir, Pranav Soorma, Hokato Sema, Simran, Navdeep
• Para-Badminton: Nitesh Kumar, Thulasimathi Murugesan, Nithya Sre Sumathy Sivan, Manisha Ramadass
• Para-Judo: Kapil Parmar
• Para-Shooting: Mona Agarwal, Rubina Francis
• Shooting: Swapnil Suresh Kusale, Sarabjot Singh
• Squash: Abhay Singh
• Swimming: Sajan Prakash
• Wrestling: Aman
• Arjuna Award (Lifetime)
• Athletics: Sucha Singh
• Para-Swimming: Murlikant Rajaram Petkar
• Dronacharya Award for Outstanding Coaches
• Regular Category:
• Subhash Rana (Para-Shooting)
• Deepali Deshpande (Shooting)
• Sandeep Sangwan (Hockey)
• Lifetime Category:
• S Muralidharan (Badminton)
• Armando Agnelo Colaco (Football)
• Rashtriya Khel Protsahan Puraskar
• Awarded to Physical Education Foundation of India
• Maulana Abul Kalam Azad (MAKA) Trophy 2024
• Overall Winner University: Chandigarh University
• 1^st Runner-Up: Lovely Professional University (PB)
• 2^nd Runner-Up: Guru Nanak Dev University, Amritsar

The unit of torque is determined by multiplying force and distance. While the SI unit is Newton-meters (N·m), in contexts using kilogram-force (kgf), torque can be expressed as kgf·cm. Among the options provided:

• kg/cm² (pressure/stress)

• kg/cm (linear measure)

• kg-cm (force × distance, representing torque)

• gm/cc (density)

Option 3 (Kg-cm) correctly represents torque as a product of force (kgf) and distance (cm). 

Answer: Option 3) Kg-cm.

The Correct answer is 200 J.

Key Points

• The kinetic energy (K.E.) of an object is given by the formula, \(KE=\frac{1}{2}mv^2\) where m is the mass and v is the velocity of the object.
• Given: Object A has a kinetic energy of 100 J with mass m and velocity v.
• The kinetic energy of object A is calculated as \(KE_A=\frac{1}{2}mv^2=100J\)
• For object B, the mass is 2m and the velocity remains v.
• Substitute these values into the kinetic energy formula for object B: \(KE_B=\frac{1}{2}\times2m\times v^2=2KE_A\)
• Thus, \(KE_B=2\times100=200J\).
• Therefore, the correct answer is 200 J.

 Additional Information

• Kinetic Energy
• Kinetic energy is the energy that an object possesses due to its motion.
• It is directly proportional to the mass of the object and the square of its velocity.
• The standard unit for measuring kinetic energy is the Joule (J).
• Mass and Velocity
• In the given problem, the mass m and velocity v are crucial factors that determine the kinetic energy.
• Doubling the mass while keeping the velocity constant doubles the kinetic energy.

CONCEPT:

• Electric flux (Φ_E): The electric flux through a given area held inside an electric field is the measure of the total number of electric lines of force passing normally through that area i.e.,

ΔΦ_E = EΔS

Where E = Electric field and ΔS = area element

• It is a scalar quantity.

EXPLANATION:

As electric flux is defined as

ΔΦ_E = EΔS

As we know that the SI unit of electric filed intensity = NC^-1

SI unit of surface area = m²

∴ SI unit of electric flux (Φ_E) = NC^-1 m²

So option 2 is correct.

The correct answer is "option 3"

Concept:

• The electron volt is the unit of energy commonly used in atomic and nuclear physics.
• The amount of energy gained by the charge of a single electron moved across an electric potential difference of 1 volt is called an electron volt.
• The electron volt equals 1.602 × 10⁻¹² erg, or 1.602 × 10⁻¹⁹ joule.

Important Points

• Unit of Power is Watt (W):
• ​ In other terms, we spent one Watt of Power while completing one Joule of Work in one second.
• 1 Watt = 1 Joule / 1 second.
• Other units of Power are Kilowatt (kW), Megawatt (MW) and Gigawatt (GW)
• Unit of electric potential is volt (V)**:**and it can also be written as Joule per Coulomb.
• Unit of electric Force is newton(N):
• The electric force is the term for the attracting or repulsive forces that exist between two charges apart.
• The SI unit of electric force is Newton denoted as N

CONCEPT:

Newton's law of Gravitation: It states that everybody in this universe attracts every other body with a force, which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

The direction of the force is along the line joining the particles.

The magnitude of the gravitational force F is given by:

\(F = G\frac{{{M_1}{M_2}}}{{{R^2}}}\)

Where G = universal gravitational constant, M₁ = mass of 1^st body, M₂ = mass of 2^nd body and R = distance between the two bodies.

EXPLANATION:

• The dimensional formula is defined as the expression of the physical quantity in terms of mass, length, time and ampere.

The above equation can be written as,

\(G = \frac{{F \times {R^2}}}{{{M_1}{M_2}}}\)

Now,

Force = mass × acceleration

∴ Dimensional formula of force (F) = [M] × [LT^-2] = [MLT^-2]

Dimensional formula of radius (R²) = [L²]

Dimensional formula of radius (M) = [M]

Dimensional formula of universal gravitational constant (G)

\(G = \frac{{ML{T^{ - 2}} \times {L^2}}}{{{M^2}}} = \frac{{M{L^3}{T^{ - 2}}}}{{{M^2}}} = {M^{ - 1}}{L^3}{T^{ - 2}}\)

∴ The dimensional formula of universal gravitational constant G is [M^-1L³T^-2].