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In Young’s interfernce experiment has a set up as shown in figure, consider that a source of monochromatic light of wavelength 5000Å is placed at S.S1 and S2 are equidistant from S and have equal widths. A wvefront, eit light waves, which superimpose to result in an interference pattern on the screen kept at position (1). this is an experiment where coherent sources are obtained by division of wavefront. O is a point on the screen equidistant from S1andS2 . P is a point on the screen 1 mm from O at which path difference between waves from S1andS2 is 11250Å. Position of amy point on the screen can be expressed by θ . The path difference is zero at O and a central bright fringe of intensity I0 is obtained at O. Q is another point 2 mm from O. If the screen is now shifted to a new position (2) [not shown in figure] so that D changes, the fringe width is found to be 50% more than its earlier value and the angular fringe width is 190 radian. Answer the following question [assume D to be large and θ very small so taht sin≈tanθ≈θ ] (a) When the screen is at position (1), phase difference of waves from s1 and s2 at point P is effectively
13
Sep
In Young’s interfernce experiment has a set up as shown in figure, consider that a source of monochromatic light of wavelength 5000Å is placed at S.S1 and S2 are equidistant from S and have equal widths. A wvefront, eit light waves, which superimpose to result in an interference pattern on the screen kept at position [...]
A satellite of mass m revolves around the earth of radius R at a height x from its surface. If g is the acceleration due to gravity on the surface of the earth, the orbital speed of the satellite is
12
Sep
A satellite of mass m revolves around the earth of radius R at a height x from its surface. If g is the acceleration due to gravity on the surface of the earth, the orbital speed of the satellite is A satellite of mass m revolves around the earth of radius R at a height [...]
Two spherical bodies of mass M and 5M and radii R and 2R respectively are released in free space with initial separation between their centres equal to 12R. If they attract each other due to gravitational force only. then the distance covered by the smaller body just before collision is
12
Sep
Two spherical bodies of mass M and 5M and radii R and 2R respectively are released in free space with initial separation between their centres equal to 12R. If they attract each other due to gravitational force only. then the distance covered by the smaller body just before collision is If suddenly the gravitational force [...]
The time period of a satellite of earth is 5 hours. If the separation between the earth and the satellite is increased to 4 times the previous value, the new time period will become
12
Sep
The time period of a satellite of earth is 5 hours. If the separation between the earth and the satellite is increased to 4 times the previous value, the new time period will become the new time period will become The time period of a satellite of earth is 5 hours. If the separation between [...]
The kinetic energy needed to project a body of mass m from the earth surface (radius R) to infinity is
12
Sep
The kinetic energy needed to project a body of mass m from the earth surface (radius R) to infinity is The kinetic energy needed to project a body of mass m from the earth surface (radius R) to infinity is September 12, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 10 - [...]
The escape velocity of a body depends upon mass as
12
Sep
The escape velocity of a body depends upon mass as The escape velocity of a body depends upon mass as September 12, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 10 - Gravitation ,
If suddenly the gravitational force of attraction between the earth and a satellite revolving around it becomes zero, what will happen?
12
Sep
If suddenly the gravitational force of attraction between the earth and a satellite revolving around it becomes zero, what will happen? V If suddenly the gravitational force of attraction between the earth and a satellite revolving around it becomes zero what will happen? September 12, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , [...]
The surface tension of a liquid decreases with a rise in
12
Sep
The surface tension of a liquid decreases with a rise in The surface tension of a liquid decreases with a rise in September 12, 2020 Category: AIIMS Last 24 Years Solved 1996 - 2019 Physics and Chemistry Video Solutions , Chapter 13 - Fluid Mechanics , Physics ,
An iceberg is floating partially immersed in sea water. The density of sea water is 1.03gcm^−3 and that of ice is 0.92 g/cm^−3. The approximate percentage of total volume of iceberg above the level of sea water is
12
Sep
An iceberg is floating partially immersed in sea water. The density of sea water is 1.03gcm^−3 and that of ice is 0.92 g/cm^−3. The approximate percentage of total volume of iceberg above the level of sea water is A hole is made at the bottom of the tank filled with water (density 1000kg/m^3) If the [...]
A wooden rod of a uniform cross section and of length 120 cm is hinged at the bottom of the tank which is filled with water to a height of 40cm. In the equilibrium position, the rod makes an angle of 60 with the vertical. The center of buoyancy is located on the rod at a distance (from the hinge) of:
12
Sep
A wooden rod of a uniform cross section and of length 120 cm is hinged at the bottom of the tank which is filled with water to a height of 40cm. In the equilibrium position, the rod makes an angle of 60 with the vertical. The center of buoyancy is located on the rod at [...]
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A wooden rod of a uniform cross section and of length 120 cm is hinged at the bottom of the tank which is filled with water to a height of 40cm. In the equilibrium position ,
the rod makes an angle of 60 with the vertical. The center of buoyancy is located on the rod at a distance (from the hinge) of: ,