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Class 6	Science Mathematics Social Science	English Hindi Computer
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Class 5	EVS
College Entrance	Jamia Millia Islamia Aligarh Muslim University Banaras Hindu University

2016

Q1
A point charge +Q is placed at point O as shown in the figure. Is the potential difference Vᴀ -Vᴮ positive, negative or zero?

Solution

Q2
How does the electric flux due to a point charge enclosed by a spherical Guassian surface get affected when its radius is increased?

Solution

Q3
Write the underlying principle of a moving coil galvanometer.

Solution

Q4
Why are microwaves considered suitable for radar systems used in aircraft navigation?

Solution

Q5
Define 'quality factor' of resonance in series LCR circuit. What is its SI unit?

Solution

Q6
Explain the terms (i) Attenuation and (ii) Demodulation used in Communication System.

Solution

Q7
Plot a graph showing variation of de-Broglie wavelength λ versus 1/√V, where V is accelerating potential for two particles A and B carrying same charge but of masses m₁, m₂ (m₁ > m₂). Which one of the two represents a particle of smaller mass and why?

Solution

Q8
A nucleus with mass number A= 240 and BE/A = 7.6 MeV breaks into two fragments each of A = 120 with BE/A = 8.5 MeV. Calculate the released energy.

Solution

Q9
Calculate the energy in fusion reaction:

Solution

Q10
Two cells of emfs 1.5 V and 2.0 V having internal resistances 0.2 Ω and 0.3 Ω respectively are connected in parallel. Calculate the emf and internal resistance of the equivalent cell.

Solution

Subjects

2016

Q1 A point charge +Q is placed at point O as shown in the figure. Is the potential difference Vᴀ -Vᴮ positive, negative or zero?

Solution

Q2 How does the electric flux due to a point charge enclosed by a spherical Guassian surface get affected when its radius is increased?

Solution

Q3 Write the underlying principle of a moving coil galvanometer.

Solution

Q4 Why are microwaves considered suitable for radar systems used in aircraft navigation?

Solution

Q5 Define 'quality factor' of resonance in series LCR circuit. What is its SI unit?

Solution

Q6 Explain the terms (i) Attenuation and (ii) Demodulation used in Communication System.

Solution

Q7 Plot a graph showing variation of de-Broglie wavelength λ versus 1/√V, where V is accelerating potential for two particles A and B carrying same charge but of masses m₁, m₂ (m₁ > m₂). Which one of the two represents a particle of smaller mass and why?

Solution

Q8 A nucleus with mass number A= 240 and BE/A = 7.6 MeV breaks into two fragments each of A = 120 with BE/A = 8.5 MeV. Calculate the released energy.

Solution

Q9 Calculate the energy in fusion reaction:

Solution

Q10 Two cells of emfs 1.5 V and 2.0 V having internal resistances 0.2 Ω and 0.3 Ω respectively are connected in parallel. Calculate the emf and internal resistance of the equivalent cell.

Solution

Subjects

Q1
A point charge +Q is placed at point O as shown in the figure. Is the potential difference Vᴀ -Vᴮ positive, negative or zero?

Q2
How does the electric flux due to a point charge enclosed by a spherical Guassian surface get affected when its radius is increased?

Q3
Write the underlying principle of a moving coil galvanometer.

Q4
Why are microwaves considered suitable for radar systems used in aircraft navigation?

Q5
Define 'quality factor' of resonance in series LCR circuit. What is its SI unit?

Q6
Explain the terms (i) Attenuation and (ii) Demodulation used in Communication System.

Q7
Plot a graph showing variation of de-Broglie wavelength λ versus 1/√V, where V is accelerating potential for two particles A and B carrying same charge but of masses m₁, m₂ (m₁ > m₂). Which one of the two represents a particle of smaller mass and why?

Q8
A nucleus with mass number A= 240 and BE/A = 7.6 MeV breaks into two fragments each of A = 120 with BE/A = 8.5 MeV. Calculate the released energy.

Q9
Calculate the energy in fusion reaction:

Q10
Two cells of emfs 1.5 V and 2.0 V having internal resistances 0.2 Ω and 0.3 Ω respectively are connected in parallel. Calculate the emf and internal resistance of the equivalent cell.