Explanation

• Gamma rays have the highest penetrating power among these particles.
• Due to their lack of mass and charge.
• It allowing them to pass through most materials.

Additional information:

• Alpha radiation has the lowest penetrating power.

Last verified on 12-04-2026

Explanation

The charges of Proton, Electron, Neutron respectively are:

• Proton: Positive charge (+1)
• Electron: Negative charge (-1)
• Neutron: Neutral charge (0)

Last verified on 24-05-2026

Explanation

• Proteins are called body-building foods.
• They help in growth, repair of tissues, and muscle development.
• They are essential for maintaining and rebuilding body cells.
• They are made of amino acids, the building blocks of the body.
• Deficiency of protein can lead to weak muscles and poor growth.

Last verified on 06-05-2026

Explanation

• Newton's Second Law of motion explains the relationship between force, mass, and acceleration
• Through the equation F = ma, which states that the acceleration of an object
• It is directly proportional to the net force acting on it and inversely proportional to its mass.
• This means a greater force produces greater acceleration,
• While a greater mass results in less acceleration for the same force.

Last verified on 22-05-2026

Explanation

• Beta radiation consists of high-speed electrons emitted from the nucleus.
• These are produced during beta decay of unstable atoms.
• They are more penetrating than alpha but less than gamma radiation.
• Beta radiation can be stopped by thin metal sheets (like aluminum).

Last verified on 06-05-2026

Explanation

• Ohm's law, description of the relationship between current, voltage, and resistance.
• Georg Simon Ohm stated that the electric current through a conductor is directly proportional to the voltage across it, provided temperature remains constant. 
• This relationship is called Ohm’s Law.

Last verified on 22-05-2026

Explanation

• Coulomb's Law states that the magnitude of the electrostatic force (F) between two point charges (q1 and q2) is directly proportional to the product of the charges and inversely proportional to the square of the distance (r) between them.
• Mathematically, this is expressed as: F ∝ (q1 × q2) / r².
• This law describes the relationship between electric charges and the force they exert on each other.

Last verified on 22-05-2026

Explanation

• Crossing over occurs in Pachytene stage of Prophase I.
• Homologous chromosomes are fully paired and exchange genetic material at this stage.
• This leads to new gene combinations.

Last verified on 20-05-2026

Explanation

• Vitamin D is essential for healthy bones.
• Its deficiency leads to Rickets in children and Osteomalacia in adults.
• Sunlight is the best natural source of Vitamin D.

Additional information:

Deficiency effects:

• Bone pain
• Weak bones
• Skeletal deformities

Other Vitamin Deficiencies:

• Vitamin A: Night blindness
• Vitamin C: Scurvy
• Vitamin B7 (Biotin): Hair fall

Last verified on 17-01-2026

Explanation

• Species is the basic unit of classification.
• Species are a group of organisms that are morphologically similar and can interbreed.
• Classification system as proposed by Linnaeus.

These groups or levels are:

1. Kingdom
2. Phylum
3. Class
4. Order
5. Family
6. Genus 
7. Species

Species is the smallest unit of classification.

Last verified on 20-05-2026