Doubtly
@Doubtly · Joined Feb 2021
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- Explain why two field lines never cross each other at any point. if two field lines will cross each other at any point then at that point the field intensity will start shooing two directions at the same p... 1
- An electrostatic field line is a continuous curve. That is, a field line cannot have sudden breaks. Why not? When a charge is placed in an electrostatic field then it experiences a continuous force. Therefore, an electrostatic field line is a contin... 1
- Verify this result for the simple configuration of two charges of the same magnitude and sign Two charges of same magnitude and same sign are placed at a certain distance. The mid-point of the joining line of the charges is the null p... 1
- Consider an arbitrary electrostatic field configuration. A small test charge is placed at a null point Let the equilibrium of the test charge be stable. If a test charge is in equilibrium and displaced from its position in any direction, then... 2
- What is the net flux of the uniform electric field of Exercise 1.15 through a cube of side 20 cm All the faces of a cube are parallel to the coordinate axes. Therefore, the number of field lines entering the cube is equal to the number o... 1
- Explain why two field lines never cross each other at any point? If two field lines cross each other at a point, then electric field intensity will show two directions at that point. This is not possible.... 1
- An electrostatic field line is a continuous curve. That is, a field line cannot have sudden breaks. Why not? Electrostatic field line is a continuous curve because a charge experiences a continuous force when traced in an electrostatic field. The fi... 1
- When a glass rod is rubbed with a silk cloth, charges appear on both. A similar phenomenon is observed Rubbing produces charges of equal magnitude but of opposite nature on the two bodies because charges are created in pairs. This phenomenon o... 2
- Why can one ignore quantisation of electric charge when dealing with macroscopic i.e., large scale charges? In macroscopic or large scale charges, the charges used are huge as compared to the magnitude of electric charge. Hence, quantisation of ele... 1
- Explain the meaning of the statement ‘electric charge of a body is quantised’. Electric charge of a body is quantized. This means that only integral (1, 2, …., n) number of electrons can be transferred from one body to... 1
- Which of the following statement is not correct? a) Αlfa agonists cause miosis Correct option is a) Αlfa agonists cause miosis 2
- Who first described miosis. Meiosis was discovered and described for the first time in sea urchin eggs in 1876 by the German biologistOscar Hertwig. It was described ag... 1
- Lines which lie in the same plane but do not intersect are said to be ____ to each other. Correct option is:(C) parallel 2
- Points X, Y, Z are collinear such that d(X, Y) = 17, d(Y, Z) = 8, find d(X, Z). Given, d(X, Y) = 17, d(Y, Z) = 8 Case I: Points X, Y, Z are such that, X – Y – Z. ∴ d(X, Z) = d(X, Y) + d(Y, Z) = 17 + 8 ∴ d(X, Z) = 25 Case... 1
- What will be the cost of making a closed cone of tin sheet having radius of base 6 m and slant height 8 m Given: Radius (r) = 6 m, length (l) = 8 m To find: Total cost of making the cone i.To find the total cost of making the cone of tin sheet, f... 1
- Surface area of a cone is 188.4 sq.cm and its slant height is 10 cm. Find its perpendicular height (π = 3.14). Given: Length (l) =10 cm, curved surface area of the cone = 188.4 sq.cm To find: Perpendicular height (h) of the cone i.Curved surface area... 1
- Curved surface area of a cone is 251.2 cm2 and radius of its base is 8 cm. Given: Radius (r) = 8 cm, curved surface area of cone = 251.2 cm² To find: Slant height (l) and the perpendicular height (h) of the cone i.C... 1
- Radius of base of a cylinder is 20 cm and its height is 13 cm, find its curved surface area and total surface area Given: Radius (r) = 20 cm, height (h) = 13 cm To find: Curved surface area and the total surface area of the cylinder i.Curved surface area... 1