Volume 2
A point object is kept between a plane mirror and a concave mirror facing each other. The distance between the mirrors is 22.5 cm. The radius of curvature of the concave mirror is 20 cm. What should be the distance of the object from the concave mirror so that after two successive reflections the final image is formed on the object itself ? [Consider first reflection from concave mirror] :
26
Jun
A point object is kept between a plane mirror and a concave mirror facing each other. The distance between the mirrors is 22.5 cm. The radius of curvature of the concave mirror is 20 cm. What should be the distance of the object from the concave mirror so that after two successive reflections the final [...]
Two plane mirrors A and B are parallel to each other and spaced 20 cm apart. An object is kept in between them at 15 cm from A. Out of the following, at which point, image is not formed in mirror a (distance measured from mirror A)
26
Jun
Two plane mirrors A and B are parallel to each other and spaced 20 cm apart. An object is kept in between them at 15 cm from A. Out of the following, at which point, image is not formed in mirror a (distance measured from mirror A) at which point image is not formed in [...]
If an electric heater is rated at 1000W, then the time required to heat one litre of water from 20^oC to 100^oC will be?
06
Dec
If an electric heater is rated at 1000W, then the time required to heat one litre of water from 20^oC to 100^oC will be? If an electric heater is rated at 1000W then the time required to heat one litre of water from 20^oC to 100^oC will be? December 6, 2020 Category: Arihant Physics by [...]
A capacitor of capacitance 2 uF is connected as shown in figure the internal resistance of the cell is 0.5 ohm. The amount of charge on capacitor plates is
06
Dec
A capacitor of capacitance 2 uF is connected as shown in figure the internal resistance of the cell is 0.5 ohm. The amount of charge on capacitor plates is A capacitor of capacitance 2 uF is connected as shown in figure the internal resistance of the cell is 0.5 ohm. The amount of charge on [...]
A charged capacitor is allowed to discharge through a resistor by closing the key at the instant t=0 (see Figure). At the instant t=(ln4)μs, the reading of the ammeter falls half the initial value. The resistance of the ammeter is equal to
06
Dec
A charged capacitor is allowed to discharge through a resistor by closing the key at the instant t=0 (see Figure). At the instant t=(ln4)μs, the reading of the ammeter falls half the initial value. The resistance of the ammeter is equal to A charged capacitor is allowed to discharge through a resistor by closing the [...]
The 80Ω galvanometer deflects full scale for a potential of 20 mV. A voltmeter deflecting full scale of 5 V is to made using this galvanometer. We must connect
06
Dec
The 80Ω galvanometer deflects full scale for a potential of 20 mV. A voltmeter deflecting full scale of 5 V is to made using this galvanometer. We must connect The 80Ω galvanometer deflects full scale for a potential of 20 mV. A voltmeter deflecting full scale of 5 V is to made using this galvanometer. [...]
A certain galvanometer has a resistance of 400 Ω and deflects full scale for a current of 0.2 mA through it. The shunt resistance required to convert it into an ammeter is
06
Dec
A certain galvanometer has a resistance of 400 Ω and deflects full scale for a current of 0.2 mA through it. The shunt resistance required to convert it into an ammeter is A certain galvanometer has a resistance of 400 Ω and deflects full scale for a current of 0.2 mA through it. The shunt [...]
On moving a charge of 20 coulomb by 2cm, 2J of work is done , then the potential difference between the points is .
05
Dec
On moving a charge of 20 coulomb by 2cm, 2J of work is done , then the potential difference between the points is . 2J of work is done On moving a charge of 20 coulomb by 2cm then the potential difference between the points is . December 5, 2020 Category: Arihant Physics by D.C [...]
The capacitance of a spherical conductor having radius 1 m is :
05
Dec
The capacitance of a spherical conductor having radius 1 m is : The capacitance of a spherical conductor having radius 1 m is : December 5, 2020 Category: Arihant Physics by D.C Pandey , Chapter 2 - Electrostatic Potential and Capacitance , Volume 2 ,
A charge q is placed at the centre of the line joining two equal charges Q such that the systems is in equilibrium, then the value of q is
05
Dec
A charge q is placed at the centre of the line joining two equal charges Q such that the systems is in equilibrium, then the value of q is A charge q is placed at the centre of the line joining two equal charges Q such that the systems is in equilibrium then the value [...]