In transverse wave,the particles vibrate perpendicular to the direction of wave propagation.
“light is a transverse wave.”
but light can be propagated without a medium , that is particles.
so, how can light be called as a transverse wave?
Light is an electromagnetic wave which requires no medium for the propagation. In electromagnetic waves including light, electric and magnetic fields vary with time in mutually perpendicular directions and also perpendicular to the direction of propagation.
What is the force experienced by a charged particle moving perpendicular to an electric field? I understand that when it is moving parallel to the electric field, it accelerates.
When a charged particle is at rest in an electric field, it experiences a force in the direction of electric field (if it is a positive charge)
If it is moving in the direction of electric field, it will be accelerated.
If it is moving opposite to the electric field, it will be decelerated.
If it is moving perpendicular to the electric field, its trajectory will be a parabola, similar to that of a horizontal projectile
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We know that whenever a body is deformed a restoring force originates and tries to restore the shape of the body and according to newtons third law of motion whenever a force acts on a body an equal and opposite force acts on the other body . So is the restoring force an opposite reacton to the deforming force and if it is not then why do we consider its direction equal and opposite to the deforming force while solving problems .
(Asked Akshat )
Answer: Restoring force comes into play only when a deforming force is exerted. When no external force acts on a body, the molecules are in equilibrium. No net force acts on it. If an external force is applied on it, it will try to increase or decrease the intermolecular distance giving rise to a state of inequilibrium to teh molecules and they will tend to go back to their original positions to retain their state of equilibrium. This gives rise to the RESTORING FORCE.
Restoring force the the internal force that comes into play whenever an external force tries to change the inter-molecular distance. The restoring force at any instant (within limits) is equal in magnitude and opposite in direction to the deforming force
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In vector multiplication, there are two types of multiplication: One in which the result is a scalar and the other in which the result is a vector.
Accordingly the two types of products of vectors are:
Scalar product (also called dot product) denoted byA.B
Vector product (also called cross product) denoted by AxB
A.B = AB cos Θ, where Θ is the angle between the directions of A and B
The physical meaning of dot product is that, “The product of the magnitude of one vector and the magnitude of the component of the other vector in the direction of the first vector.”
AxB = AB sinΘ
The direction of cross product is given by right hand cork screw rule