Physics-
General
Easy
Question
A parallel plate capacitor with air as medium between the plates has a capacitance of 10. The area of capacitor is divided into two equal halves and filled with two media as shown in the figure having dielectric constant k1 = 2 and k2 = 4. The capacitance of the system will now be
- 10
- 20
- 30
- 40
The correct answer is: 30
Related Questions to study
physics-
The capacity of an air condenser is . If a medium is placed between its plates. The capacity becomes 12mF. The dielectric constant of the medium will be
The capacity of an air condenser is . If a medium is placed between its plates. The capacity becomes 12mF. The dielectric constant of the medium will be
physics-General
physics-
As in figure shown, if a capacitor C is charged by connecting it with resistance R, then energy is given by the battery will be
As in figure shown, if a capacitor C is charged by connecting it with resistance R, then energy is given by the battery will be
physics-General
physics-
What is the area of the plates of a 3F parallel plate capacitor, if the separation between the plates is 5mm
What is the area of the plates of a 3F parallel plate capacitor, if the separation between the plates is 5mm
physics-General
physics-
A light bulb, a capacitor and a battery are connected together as shown here, with switch S initially open. When the switch S is closed, which one of the following is true
A light bulb, a capacitor and a battery are connected together as shown here, with switch S initially open. When the switch S is closed, which one of the following is true
physics-General
physics-
An uncharged capacitor is connected to a battery. On charging the capacitor
An uncharged capacitor is connected to a battery. On charging the capacitor
physics-General
physics-
A frictionless dielectric plate S is kept on a frictionless table T. A charged parallel plate capacitance C. (of which the plates are frictionless) is kept near it. The plate S is between the plates. When the plate S is left between the plates :
A frictionless dielectric plate S is kept on a frictionless table T. A charged parallel plate capacitance C. (of which the plates are frictionless) is kept near it. The plate S is between the plates. When the plate S is left between the plates :
physics-General
physics-
The capacity of a parallel plate capacitor increases with the :
The capacity of a parallel plate capacitor increases with the :
physics-General
physics-
The energy stored in a condenser of capacity C which has been raised to a potential V is given by
The energy stored in a condenser of capacity C which has been raised to a potential V is given by
physics-General
physics-
To make the central fringe at the centre O, a mica sheet of refractive index 1.5 is introduced. Choose the correct statements (s).
To make the central fringe at the centre O, a mica sheet of refractive index 1.5 is introduced. Choose the correct statements (s).
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-
Radio waves coming at to vertical are received by a radar after reflection from a nearby water surface & directly. What should be height of antenna from water surface so that it records a maximum intensity. (wavelength = ).
Radio waves coming at to vertical are received by a radar after reflection from a nearby water surface & directly. What should be height of antenna from water surface so that it records a maximum intensity. (wavelength = ).
physics-General
physics-
The figure shows a transparent slab of length 1m placed in air whose refractive index in x direction varies as The optical path length of ray R will be
The figure shows a transparent slab of length 1m placed in air whose refractive index in x direction varies as The optical path length of ray R will be
physics-General
physics-
In the YDSE shown the two slits are covered with thin sheets having thickness t & 2t and refractive index 2m and m. Find the position (y) of central maxima
In the YDSE shown the two slits are covered with thin sheets having thickness t & 2t and refractive index 2m and m. Find the position (y) of central maxima
physics-General
physics-
Young’s double slit experiment is carried with two thin sheets of thickness 10.4 mm each and refractive index m1= 1.52 and m2 = 1.40 covering the slits S1 and S2 , respectively. If white light of range 400 nm to 780 nm is used then which wavelength will form maxima exactly at point O, the centre of the screen ?
Young’s double slit experiment is carried with two thin sheets of thickness 10.4 mm each and refractive index m1= 1.52 and m2 = 1.40 covering the slits S1 and S2 , respectively. If white light of range 400 nm to 780 nm is used then which wavelength will form maxima exactly at point O, the centre of the screen ?
physics-General
physics-
In a YDSE experiment if a slab whose refractive index can be varied is placed in front of one of the slits then the variation of resultant intensity at mid-point of screen with will be best represented by .[Assume slits of equal width and there is no absorption by slab]
In a YDSE experiment if a slab whose refractive index can be varied is placed in front of one of the slits then the variation of resultant intensity at mid-point of screen with will be best represented by .[Assume slits of equal width and there is no absorption by slab]
physics-General