Physics-
General
Easy
Question
An electron of mass m , moves around the nucleus in a circular orbit of radius ‘r’ under the action of centripetal force F The equivalent electric current is _______
The correct answer is:
Related Questions to study
physics-
A glass prism of refractive index 1.5 is immersed in water (refractive index 4/(C) A light beam incident normally on the face AB is totally reflected to reach the face BC if
A glass prism of refractive index 1.5 is immersed in water (refractive index 4/(C) A light beam incident normally on the face AB is totally reflected to reach the face BC if
physics-General
physics-
A point object is placed at a distance of 20cm from a thin plano convex lens of focal length 15 cm The plane surface of the lens is now silvered The image fomed by the system is at.....
A point object is placed at a distance of 20cm from a thin plano convex lens of focal length 15 cm The plane surface of the lens is now silvered The image fomed by the system is at.....
physics-General
physics-
A bi-convex lens is formed with two thin plano-convex lenses as shown in the figure Refractive index n of the first lens is 1.5 and that of the second lens is 1.2 Both the curved surfaces are of the same radius of curvature R = 14 cm For this bi-convex lens, for an object distance of 40 cm the image distance will be:
A bi-convex lens is formed with two thin plano-convex lenses as shown in the figure Refractive index n of the first lens is 1.5 and that of the second lens is 1.2 Both the curved surfaces are of the same radius of curvature R = 14 cm For this bi-convex lens, for an object distance of 40 cm the image distance will be:
physics-General
physics-
A light ray, going through a prism of angle 60°, is found to deviate by 30° The refractive index of prism is
A light ray, going through a prism of angle 60°, is found to deviate by 30° The refractive index of prism is
physics-General
physics-
Splitting of white light into different colours is called:
Splitting of white light into different colours is called:
physics-General
physics-
Virtual image is
Virtual image is
physics-General
physics-
A concave mirror forms an erect image of twice its size, object distance from the mirror is ....
A concave mirror forms an erect image of twice its size, object distance from the mirror is ....
physics-General
physics-
An object is present at 0.5 m in front of a plane mirror The distance between object and image is?
An object is present at 0.5 m in front of a plane mirror The distance between object and image is?
physics-General
Physics-
Standing stationary waves can be obtained in an air column even if the interfering waves are
Standing stationary waves can be obtained in an air column even if the interfering waves are
Physics-General
Physics-
The equation of a wave travelling in a string can be written as y = 3 cos 
(100 t - x) Its wavelength is
The equation of a wave travelling in a string can be written as y = 3 cos (100 t - x) Its wavelength is
Physics-General
Physics-
The equation of a wave is y= 2 sin (0.5x - 200t), where x and y are expressed in cm and t in sec The wave velocity is
The equation of a wave is y= 2 sin (0.5x - 200t), where x and y are expressed in cm and t in sec The wave velocity is
Physics-General
Physics-
Transverse waves can propagate in
Transverse waves can propagate in
Physics-General
Physics-
A man standing on a cliff claps his hand hears its echo after 1 sec If sound is reflected from another mountain and velocity of sound in air is 340 m/sec Then the distance between the man and reflection point is
A man standing on a cliff claps his hand hears its echo after 1 sec If sound is reflected from another mountain and velocity of sound in air is 340 m/sec Then the distance between the man and reflection point is
Physics-General
physics-
Sound waves have the following frequencies that are audible to human beings
Sound waves have the following frequencies that are audible to human beings
physics-General
physics-
Assertion : If dot product and cross product of 
are zero, it implies that one of the vector must be a null vector
Reason : Null vector is a vector with zero magnitude
Assertion : If dot product and cross product of are zero, it implies that one of the vector must be a null vector
Reason : Null vector is a vector with zero magnitude
physics-General
