Sample Paper 12 Th Class
SAMPLE PAPER-2013
CLASS-XII
Subject : Physics
Time allowed : 3 hours Maximum Marks : 70
General Instructions : i) All questions are compulsory. ii) Question numbers 1 to 8 are very short answer type questions, carrying one mark each. iii) Question numbers 9 to 18 are short answer type questions , carrying two marks each. iv) Question numbers 19 to 27 are also short answer type questions, carrying three marks each. v) Question numbers 28 to 30 are long answer type questions, carrying five marks each. vi) Use of calculators is not permitted. However, you may use log tables, if necessary.
Q.1> In a hydrogen atom, an electron revolves around a proton. Which of these two exerts a greater electrostatic force on the other?
Q.2> What is the force experienced by a positively charges particle Q moving at right angles to a uniform electric field E.
Q.3> What is the order of voltages that can be built up using a Van De Graff generator?
Q.4> What is the angle b/w Electric field and Dipole moment at an axial point?
Q.5> Define gyromagnetic ratio. What is it’s value?
Q.6> State the condition in which terminal voltage across a secondary cell is equal to its emf.
Q.7> The dielectric strength of air is 3 x 106 V/m. What is the maximum charge that can be safely stored on a sphere of radius 10m?
Q.8> Name two types of commercially available resistors.
Q.9> On the same graph plot the variation of E versus R and V versus R for a point charge.
Q.10> Define mobility and mention its SI unit
Q.11> Two resistors are connected in parallel b/w A and B to give a net resistance of 2 ohms. When one of these resistors is broken, the net resistance becomes a 3 ohms. What is the resistance of the resistor that was broken?
Q.12> Using a suitable graph, explain why nichrome is used in standard resistance coils.
Q.13> A velocity selector is to be designed for particles of velocity 10m/s. What magnetic field should be employed if the electric field in it
CLASS-XII
Subject : Physics
Time allowed : 3 hours Maximum Marks : 70
General Instructions : i) All questions are compulsory. ii) Question numbers 1 to 8 are very short answer type questions, carrying one mark each. iii) Question numbers 9 to 18 are short answer type questions , carrying two marks each. iv) Question numbers 19 to 27 are also short answer type questions, carrying three marks each. v) Question numbers 28 to 30 are long answer type questions, carrying five marks each. vi) Use of calculators is not permitted. However, you may use log tables, if necessary.
Q.1> In a hydrogen atom, an electron revolves around a proton. Which of these two exerts a greater electrostatic force on the other?
Q.2> What is the force experienced by a positively charges particle Q moving at right angles to a uniform electric field E.
Q.3> What is the order of voltages that can be built up using a Van De Graff generator?
Q.4> What is the angle b/w Electric field and Dipole moment at an axial point?
Q.5> Define gyromagnetic ratio. What is it’s value?
Q.6> State the condition in which terminal voltage across a secondary cell is equal to its emf.
Q.7> The dielectric strength of air is 3 x 106 V/m. What is the maximum charge that can be safely stored on a sphere of radius 10m?
Q.8> Name two types of commercially available resistors.
Q.9> On the same graph plot the variation of E versus R and V versus R for a point charge.
Q.10> Define mobility and mention its SI unit
Q.11> Two resistors are connected in parallel b/w A and B to give a net resistance of 2 ohms. When one of these resistors is broken, the net resistance becomes a 3 ohms. What is the resistance of the resistor that was broken?
Q.12> Using a suitable graph, explain why nichrome is used in standard resistance coils.
Q.13> A velocity selector is to be designed for particles of velocity 10m/s. What magnetic field should be employed if the electric field in it