CBSE

Physics Class 12 Important Questions on Electric Charge and Field 2024-24

Class XII

Important Question

Electric Charge & Field

1. Four equal changes & are placed at the four corners A,B, C, D of a square of length Calculate the force on charge at B.

2. Write three properties of electric field lines.

3. S, and s₂ are two hollow Concentric spheres enclosing charge q and 2q respectively as shown in fig.

What is the ratio of electric flux through s, and s₂ ?

4. Derive an expression of electric field due to a dipole at point on the axis 

5. Define linear charge density 

 

Physics Class 12 Important on Interference and Diffraction 2024-25

ABHYAAS ACADEMY 

Interference and Diffraction

1.Write the necessary conditions to obtain sustained interference.

2. What kind of fringes do you expect to observe if white light is used instead of monochromatic light.

3. Monochromatic light of wavelength 600nm is incident from air on a water surface. If the refractive index of water is 4/3, then find the wavelength of the refracted light. 

Notes on Improvement in Food Resources CBSE 9 science

NTRODUCTION

Food is an organic substance which is necessary for the existence of all living organisms. It supplies nutrients like proteins, carbohydrates, fats, vitamins and minerals to our body Thus we are dependent on animals and plants for food. Therefore it is necessary to increase our production efficiency for both crops and livestock.

The green revolution has contributed to increase food-grain production and the white revolution has led to better and more efficient use as well as availability of milk.

 

IMPORTANT TERMS AND CONCEPTS

Pages