Multiple Choice Question on Basic Concept of Science Class XI-XII Standard Practice Test 7
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This is a mock drill question bank on Basic Concept of Science of Class XI and XII standard. The question bank consists of 10 questions with clock set for 10 minutes. After you finish the test, press Quiz Finish and you will get the answer sheet, your result and its comparison with others. You will also be given remarks containing the explanation about the answer and also about the distracters (other options) to build confidence on the subject.
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The Answer Key:
Sr No Question Answer Remarks 1 This is one of the standard method of creation of charge Charge cannot be created Charge cannot be created. It only travels from one location to another. Gold leaf Electroscope is used to measure the force between charges and van de graph generator is for accumulating the charge. The same is the function of capacitor where charge is allowed to accumulate. 2 n resistors each of R ohms are first connected in series and than in parallel. The ratio of the resistance in series by parralel will be n² Series combination=nR, Parallel combination R/n. Therefore ratio is n². The mistake is likely to committed to write parallel combination as n/R, thus working out the relation as R² 3 A physical significance of a virtual image formed in optics is that it can be seen by naked eye but cannot be projected on screen 4 Heat supplied is equal to work done is the outcome which law of thermodynamics first 5 A charged particle of charge q is moving at a velocity of v parallel to the magnetic field B, it will be accelerated by a force it will continue to move unaffected A charge particle moving in a magnetic field experiences Lorentz force given by vector product of v and B as F=q(vxB) or F=BqvSinθ; where if θ is the angle of motion with respect to B. If it is zero, the force is also zero and maximum and perpendicular to B and v if it is 90°. for any other value it will be helix. 6 A battery of inernal resistance e and emf of E supplies power to resistance R. The power drawn is maximum when r=R Maximum Power= E*E/4R 7 Ratio of refrective index of one medium 1 in respect of other medium 2 is given by the relation μ₁/μ₂ It is important to remember wrt i.e. Option 2 will be correct if we have to working out the ratio of 2 wrt 1. The third option is based on the velocity of light in two different medium. 8 The difference between molar specific heat at constant pressure and constant volume is given by R Cp-Cv=R where R is universal gas constant 9 For conversion of galvanometer into voltmeter, you will require a high series resistance with galvanometer Voltmeters are connected in parallel to the circuit whose voltage is to be measured therefore, it should draw very little current and therefore, a high series resitance is required. 10 Van de Graaff generator are used to produce Million Volt Electric Potential -
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Question 1 of 10
1. Question
A physical significance of a virtual image formed in optics is that
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Question 2 of 10
2. Question
A charged particle of charge q is moving at a velocity of v parallel to the magnetic field B will be accelerated by a force
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Question 3 of 10
3. Question
This is one of the standard method of creation of charge
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Question 4 of 10
4. Question
n resistors each of R ohms are first connected in series and than in parallel. The ratio of the resistance in series by parralel will be
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Question 5 of 10
5. Question
Heat supplied is equal to work done is the outcome which law of thermodynamics
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Question 6 of 10
6. Question
A battery of inernal resistance e and emf of E supplies power to resistance R. The power drawn is maximum when
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Question 7 of 10
7. Question
Ratio of refrective index of one medium 1 in respect of other medium 2 is given by the relation
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Question 8 of 10
8. Question
The difference between molar specific heat at constant pressure and constant volume is given by
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Question 9 of 10
9. Question
For conversion of galvanometer into voltmeter, you will require
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Question 10 of 10
10. Question
Van de Graaff generator are used to produce
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