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Class 6	Science Mathematics Social Science	English Hindi Computer
Class 7	Science Mathematics Social Science	English Hindi Computer
Class 8	Science Mathematics Social Science	English Hindi Computer
Class 9	Science Mathematics Social Science	English Hindi Computer
Class 10	Science Math Social Science	English Hindi Computer
Class 11	Physics Chemistry Biology	Mathematics English Economics
Class 12	Physics Chemistry Biology	Mathematics English Economics
Class 5	EVS
College Entrance	Jamia Millia Islamia Aligarh Muslim University Banaras Hindu University

2012

Q1
When electrons drift in a metal from lower to higher potential, does it mean that all the free electrons of the metal are moving in the same direction ?

Solution

Q2
The horizontal component of the earth’s magnetic field at a place is B and angle of dip is 60°. What is the value of vertical component of earth’s magnetic field at equator ?

Solution

Q3
Show on a graph, the variation of resistivity with temperature for a typical semiconductor.

Solution

Q4
Why should electrostatic field be zero inside a conductor ?

Solution

Q5
Name the physical quantity which remains same for microwaves of wavelength 1 mm and UV radiations of 1600 A in vacuum.

Solution

Q6
Under what condition does a biconvex lens of glass having a certain refractive index act as a plane glass sheet when immersed in a liquid ?

Solution

Q7
Predict the directions of induced currents in metal rings 1 and 2 lying in the same plane where current I in the wire is increasing steadily.

Solution

Q8
State de-Broglie hypothesis.

Solution

Q9
A ray of light incident on an equilateral prism (μg = √3) moves parallel to the base line of the prism inside it. Find the angle of incidence for this ray.

Solution

Q10
Distinguish between ‘Analog and Digital signals.

Solution

Subjects

2012

Q1 When electrons drift in a metal from lower to higher potential, does it mean that all the free electrons of the metal are moving in the same direction ?

Solution

Q2 The horizontal component of the earth’s magnetic field at a place is B and angle of dip is 60°. What is the value of vertical component of earth’s magnetic field at equator ?

Solution

Q3 Show on a graph, the variation of resistivity with temperature for a typical semiconductor.

Solution

Q4 Why should electrostatic field be zero inside a conductor ?

Solution

Q5 Name the physical quantity which remains same for microwaves of wavelength 1 mm and UV radiations of 1600 A in vacuum.

Solution

Q6 Under what condition does a biconvex lens of glass having a certain refractive index act as a plane glass sheet when immersed in a liquid ?

Solution

Q7 Predict the directions of induced currents in metal rings 1 and 2 lying in the same plane where current I in the wire is increasing steadily.

Solution

Q8 State de-Broglie hypothesis.

Solution

Q9 A ray of light incident on an equilateral prism (μg = √3) moves parallel to the base line of the prism inside it. Find the angle of incidence for this ray.

Solution

Q10 Distinguish between ‘Analog and Digital signals.

Solution

Subjects

Q1
When electrons drift in a metal from lower to higher potential, does it mean that all the free electrons of the metal are moving in the same direction ?

Q2
The horizontal component of the earth’s magnetic field at a place is B and angle of dip is 60°. What is the value of vertical component of earth’s magnetic field at equator ?

Q3
Show on a graph, the variation of resistivity with temperature for a typical semiconductor.

Q4
Why should electrostatic field be zero inside a conductor ?

Q5
Name the physical quantity which remains same for microwaves of wavelength 1 mm and UV radiations of 1600 A in vacuum.

Q6
Under what condition does a biconvex lens of glass having a certain refractive index act as a plane glass sheet when immersed in a liquid ?

Q7
Predict the directions of induced currents in metal rings 1 and 2 lying in the same plane where current I in the wire is increasing steadily.

Q8
State de-Broglie hypothesis.

Q9
A ray of light incident on an equilateral prism (μg = √3) moves parallel to the base line of the prism inside it. Find the angle of incidence for this ray.

Q10
Distinguish between ‘Analog and Digital signals.