Physics-
General
Easy
Question
If a hemispherical body is placed in a uniform electric field E then the flux linked with the curved surface is
The correct answer is:
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Physics-
Electric field due to an infinite sheet of charge having surface density is E. Electric field due to an infinite conducting sheet of same surface density of charge is
Electric field due to an infinite sheet of charge having surface density is E. Electric field due to an infinite conducting sheet of same surface density of charge is
Physics-General
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Two charges and are separated by a distance 20cm in air. The position of the neutral point from the small charge is
Two charges and are separated by a distance 20cm in air. The position of the neutral point from the small charge is
Physics-General
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Two charges 2c and 6c are separated by a finite distance. If a charge of -4c is added to each of them, the initial force of will change to
Two charges 2c and 6c are separated by a finite distance. If a charge of -4c is added to each of them, the initial force of will change to
Physics-General
Maths-
f(x) = x3 – 3x2 + 6x + 7 has
f(x) = x3 – 3x2 + 6x + 7 has
Maths-General
Physics-
In a Young's double slit experiment set-up source S of wavelength illuminates two slits and , Which act as two coherent sources. The source S oscillates about its shown position according to the equation , where is in millimeters and in second. Find positions of central maxima as a function of time with respect to ' O '.
In a Young's double slit experiment set-up source S of wavelength illuminates two slits and , Which act as two coherent sources. The source S oscillates about its shown position according to the equation , where is in millimeters and in second. Find positions of central maxima as a function of time with respect to ' O '.
Physics-General
Physics-
In a Young's double slit interference experiment the fringe pattern is observed on a screen placed at a distance D from the slits. The slits are separated by a distance d and are illuminated by monochromatic light of wavelength . Find the distance from the central point where the intensity falls to (A) half the maximum, (B) one fourth of the maximum.
In a Young's double slit interference experiment the fringe pattern is observed on a screen placed at a distance D from the slits. The slits are separated by a distance d and are illuminated by monochromatic light of wavelength . Find the distance from the central point where the intensity falls to (A) half the maximum, (B) one fourth of the maximum.
Physics-General
Physics-
A double slit is illuminated by a coherent light of wavelength . The slits are separated by a distance d. A plane mirror is placed in front of the double slit at a distance from it and a screen is placed behind the double slit at a distance from it. The screen receives only the light
A double slit is illuminated by a coherent light of wavelength . The slits are separated by a distance d. A plane mirror is placed in front of the double slit at a distance from it and a screen is placed behind the double slit at a distance from it. The screen receives only the light
Physics-General
Physics-
Two transparent slabs having equal thickness but different refractive indices and are pasted side by side to form a composite slab. This slab is placed just after the double slit in a Young's experiment so that the light from one slit goes through one material and the light from the other slit goes through the other material. What should be the minimum thickness of the slab so that there is a minimum at the point which is equidistant from the slits?
Two transparent slabs having equal thickness but different refractive indices and are pasted side by side to form a composite slab. This slab is placed just after the double slit in a Young's experiment so that the light from one slit goes through one material and the light from the other slit goes through the other material. What should be the minimum thickness of the slab so that there is a minimum at the point which is equidistant from the slits?
Physics-General
Physics-
Find the angular separation between the consecutive bright fringes in a Young's double slit experiment with blue-green light of wavelength 500 nm. The separation between the slits is .
Find the angular separation between the consecutive bright fringes in a Young's double slit experiment with blue-green light of wavelength 500 nm. The separation between the slits is .
Physics-General
Physics-
In a Young's double slit experiment, green light is incident on the two slits. The interference pattern is observed on a screen. Which of the following changes would cause the observed fringes to be more closely spaced?
In a Young's double slit experiment, green light is incident on the two slits. The interference pattern is observed on a screen. Which of the following changes would cause the observed fringes to be more closely spaced?
Physics-General
Physics-
If Hari displaces 50 kg mass by 5 metre and Krishna displaces 100 kg mass by 2.5 metre which one does more work?
If Hari displaces 50 kg mass by 5 metre and Krishna displaces 100 kg mass by 2.5 metre which one does more work?
Physics-General
Physics-
By doing 2000 J of work, a body moved to a height of 50m Find its mass (g = 10m/s2)
By doing 2000 J of work, a body moved to a height of 50m Find its mass (g = 10m/s2)
Physics-General
Physics-
A mango of mass 200g at a height of 3m from the ground falls down Calculate its kinetic energy before reaching the ground
A mango of mass 200g at a height of 3m from the ground falls down Calculate its kinetic energy before reaching the ground
Physics-General
Physics-
A boy of mass 20kg went to first floor of a building having 17 steps each of 20cm wide and 20cm height Find the P E of the boy in first floor
A boy of mass 20kg went to first floor of a building having 17 steps each of 20cm wide and 20cm height Find the P E of the boy in first floor
Physics-General
Physics-
Relation between kinetic energy and momentum is ............
Relation between kinetic energy and momentum is ............
Physics-General