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๐๐๐ ๐ค ๐ค 1๏ธโฃ ๐ ๐ค ๐ค ๐ค ๐ค ๐ค ๐ค ๐ค ๐ค ๐ค ๐ค ๐๐
1. Which of the following factors is the induced charge in an electromagnetic induction independent of?
a.Time
b.Resistance of the coil
c.Change of flux
d.None of the above
Answer: (a) Time
2. Which of the following states that an emf is induced whenever there is a change in the magnetic field linked with electric circuits?
a.Lenzโs Law
b.Ohmโs Law
c.Faradayโs Law of Electromagnetic Induction
d.None of the above
Answer: (c) Faradayโs Law of Electromagnetic Induction
3. Which of the following gives the polarity of the induced emf?
a.Biot-Savart Law
b.Lenzโs Law
c.Ampereโs circuital Law
d.Flemingโs right-hand Rule
Answer: (b) Lenzโs Law
4. Electrical Inertia is the measure of
a.Self Inductance
b.Mutual Inductance
c.Impedance
d.None of the above
Answer: (a) Self Inductance
5. Which of the following laws is the consequence of the Law of conservation of energy?
a.Lenzโs Law
b.Ohmโs Law
c.Archimedes Law
d.All of the above
Answer: (a) Lenzโs Law
6. Which of the following apparatus construction uses electromagnetic induction?
a.Voltmeter
b.Galvanometer
c.Generator
d.Electric Motor
Answer: (c) Generator
7. Which of the following factors is the self inductance associated with a coil is independent of?
a.induced voltage
b.current
c.time
d.coil resistance
Answer: (d) coil resistance
8. Which of the following rules is used to identify the direction of the current induced in a wire moving in a magnetic field?
a.Ampereโs Rule
b.Flemingโs Left-Hand Rule
c.Flemingโs Right-Hand Rule
d.None of the above
Answer: (b) Flemingโs Left-Hand Rule
9. Which of the following statements is true?
a.A metal plate can be heated by passing either a direct current or an alternating current through the plate.
b.A metal plate can be heated by placing it in a time-invariant magnetic field.
c.A metal plate can be heated by placing it in a time-variant magnetic field
d.Both (a) and (c)
Answer: (d) Both (a) and (c)
10. The induced emf is equal to the coefficient of self-inductance is equal to unity, when the rate of change of current is unity.
a.True
b.False
Answer: (a) True
๐ด๐ค ๐ค ๐ค ๐ค ๐ค ๐ค ๐ค ๐ค ๐ค ๐ค ๐ค ๐ ๐
๐ Physics Top10 MCQS
๐ Physics Book -1 MCQS
1. Which of the following factors is the induced charge in an electromagnetic induction independent of?
a.Time
b.Resistance of the coil
c.Change of flux
d.None of the above
2. Which of the following states that an emf is induced whenever there is a change in the magnetic field linked with electric circuits?
a.Lenzโs Law
b.Ohmโs Law
c.Faradayโs Law of Electromagnetic Induction
d.None of the above
3. Which of the following gives the polarity of the induced emf?
a.Biot-Savart Law
b.Lenzโs Law
c.Ampereโs circuital Law
d.Flemingโs right-hand Rule
4. Electrical Inertia is the measure of
a.Self Inductance
b.Mutual Inductance
c.Impedance
d.None of the above
5. Which of the following laws is the consequence of the Law of conservation of energy?
a.Lenzโs Law
b.Ohmโs Law
c.Archimedes Law
d.All of the above
6. Which of the following apparatus construction uses electromagnetic induction?
a.Voltmeter
b.Galvanometer
c.Generator
d.Electric Motor
7. Which of the following factors is the self inductance associated with a coil is independent of?
a.induced voltage
b.current
c.time
d.coil resistance
8. Which of the following rules is used to identify the direction of the current induced in a wire moving in a magnetic field?
a.Ampereโs Rule
b.Flemingโs Left-Hand Rule
c.Flemingโs Right-Hand Rule
d.None of the above
9. Which of the following statements is true?
a.A metal plate can be heated by passing either a direct current or an alternating current through the plate.
b.A metal plate can be heated by placing it in a time-invariant magnetic field.
c.A metal plate can be heated by placing it in a time-variant magnetic field
d.Both (a) and (c)
10. The induced emf is equal to the coefficient of self-inductance is equal to unity, when the rate of change of current is unity.
a.True
b.False
๐ด
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RNA lacks the nitrogen base of _______?
Anonymous Quiz
53%
a) Thymine
16%
b) Cytosine
25%
c) Uracil
6%
d) Adenine
๐คฉ7๐ค4๐3
Lysine is an example of a polar but uncharged amino acid ?
Anonymous Quiz
18%
a) Serine
25%
b) Aspartate
35%
c) Lysine
21%
d) Arginine
๐คฉ9๐1
Approximate percentage of elements in Human body
โข Oxygen - 65%
โข Carbon - 18%
โข Hydrogen - 10%
โข Nitrogen - 3%
โข Calcium - 2%
โข Phosphorous - 1%
โข Potassium - 0.35%
โข Sodium - 0.15%
โข Chloride - 0.15%
โข Magnesium - 0.05%
โข Iron - 0.0004%
โข Oxygen - 65%
โข Carbon - 18%
โข Hydrogen - 10%
โข Nitrogen - 3%
โข Calcium - 2%
โข Phosphorous - 1%
โข Potassium - 0.35%
โข Sodium - 0.15%
โข Chloride - 0.15%
โข Magnesium - 0.05%
โข Iron - 0.0004%
โค32๐12๐4๐ค1
๐ฅณ๐ฅณ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ ๐ฅณ๐ฅณ
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โ๏ธ ๐ ๐ ๐ ๐ ๐ โ๏ธ
1. What did Rutherfordโs alpha particle experiment prove?
a.Electrons
b.Protons
c.Neutrons
d.Nucleus
Answer: (d) Nucleus
2. Why was Rutherfordโs atomic model unstable?
a.Electrons do not remain in orbit.
b.Nuclei will break down.
c.The nucleus repels electrons.
d.Orbiting electrons radiate energy.
Answer: (a) Electrons do not remain in orbit .
3. Balmer series lies in which spectrum?
a.Ultraviolet
b.Visible
c.Infrared
d.Partially Visible
Answer: (b) Visible
4. According to the classical theory, the circular path of the electrons is ?
a.Circular
b.Parabolic
c.Spiral
d.Straight line
Answer: (c) Spiral
5. Electrons in the atom are held to the nucleus by ?
a.Nuclear Force
b.Coulombโs Force
c.Gravitational Force
d.Van Der Waalโs Force
Answer: (b) Coulomb's Force
6. The electrons of Rutherfordโs model would be expected to lose energy because?
a.They jump on the nucleus
b.They move randomly
c.Radiate electromagnetic waves
d.Escape from the atom
Answer: (c) Radiate electromagnetic waves.
7. Who discovered the first spectral series?
a.Lyman
b.Balmer
c.Paschen
d.Pfund
Answer: (b) Balmer
8. Which of the following did Bohr use to explain his theory?
a.Quantization of angular momentum
b.Conservation of Quantum frequency
c.Conservation of Mass
d.Conservation of Linear Momentum
Answer: (a) Quantization of angular momentum
9. The significant result deduced from Rutherfordโs scattering experiment is that?
a.the whole of the positive charge is concentrated at the center of an atom
b.there are neutrons inside the nucleus
c.ฮฑ-particles are hydrogen nuclei
d.electrons are embedded in the atom
Answer: (a) the whole of the positive charge is concentrated at the center of an atom.
10. The first model of the atom was proposed by ?
a.Neils Bohr
b.Albert Einstein
c.J.J Thompson
d.Ernest Rutherford
Answer: (c) J.J Thompson
๐ค ๐ค ๐ค ๐ค ๐ค ๐ค ๐ค
๐ฉ ๐ฉ ๐ฉ ๐ฉ ๐ฉ ๐ฉ ๐ฉ ๐ฉ ๐ฉ ๐ฉ ๐ฉ ๐ฉ ๐ฉ ๐ฉ ๐ฉ ๐ฉ
๐ดhttps://youtube.com/playlist?list=PL3s-GF0G43lSeb18V6-DFfM_e6iS7r4tN&si=vUQ9GbbTgQ5pfHDZ
1. What did Rutherfordโs alpha particle experiment prove?
a.Electrons
b.Protons
c.Neutrons
d.Nucleus
2. Why was Rutherfordโs atomic model unstable?
a.Electrons do not remain in orbit.
b.Nuclei will break down.
c.The nucleus repels electrons.
d.Orbiting electrons radiate energy.
3. Balmer series lies in which spectrum?
a.Ultraviolet
b.Visible
c.Infrared
d.Partially Visible
4. According to the classical theory, the circular path of the electrons is ?
a.Circular
b.Parabolic
c.Spiral
d.Straight line
5. Electrons in the atom are held to the nucleus by ?
a.Nuclear Force
b.Coulombโs Force
c.Gravitational Force
d.Van Der Waalโs Force
6. The electrons of Rutherfordโs model would be expected to lose energy because?
a.They jump on the nucleus
b.They move randomly
c.Radiate electromagnetic waves
d.Escape from the atom
7. Who discovered the first spectral series?
a.Lyman
b.Balmer
c.Paschen
d.Pfund
8. Which of the following did Bohr use to explain his theory?
a.Quantization of angular momentum
b.Conservation of Quantum frequency
c.Conservation of Mass
d.Conservation of Linear Momentum
9. The significant result deduced from Rutherfordโs scattering experiment is that?
a.the whole of the positive charge is concentrated at the center of an atom
b.there are neutrons inside the nucleus
c.ฮฑ-particles are hydrogen nuclei
d.electrons are embedded in the atom
10. The first model of the atom was proposed by ?
a.Neils Bohr
b.Albert Einstein
c.J.J Thompson
d.Ernest Rutherford
๐ดhttps://youtube.com/playlist?list=PL3s-GF0G43lSeb18V6-DFfM_e6iS7r4tN&si=vUQ9GbbTgQ5pfHDZ
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In nuclear reactions, there is a conservation of ?
Anonymous Quiz
18%
a.Mass only
26%
b.Energy only
50%
c.Mass, energy and momentum
6%
d.Momentum only
โค4๐ฑ4๐2
Which of the following are not emitted by radioactive substances?
Anonymous Quiz
21%
a.Protons
21%
b.Electrons
24%
c.Gamma Rays
34%
d.Helium Nuclei
โค5๐4๐คฏ4๐คฉ2๐ค2
โ
Atomic and Molecular Masses
โAtomic Mass:
Mass of an atom.
Reported in atomic mass unit โamuโ or unified mass โuโ
One atomic mass unit i.e. amu, is the mass exactly equal to one-twelfth the mass of one carbon-12 atom.
โMolecular Mass:
Mass of a molecule of covalent compound.
It is equal to the sum of atomic masses of all the elements present in the molecule.
Formula Unit Mass
Mass of a molecule of an ionic compound
It is also equal to the sum of atomic masses of all the elements present in the molecule
โ Mole Concept:
โMole:
Unit of amount of substance.
One mole amount of substance that contains as many particles or entities as there are atoms in exactly 12 g of the 12C isotope.
โMolar mass:
Mass of one mole of a substance in gram
Molar mass in gram in numerically equal to atomic/molecular/formula mass in amu or u.
โAtomic Mass:
Mass of an atom.
Reported in atomic mass unit โamuโ or unified mass โuโ
One atomic mass unit i.e. amu, is the mass exactly equal to one-twelfth the mass of one carbon-12 atom.
โMolecular Mass:
Mass of a molecule of covalent compound.
It is equal to the sum of atomic masses of all the elements present in the molecule.
Formula Unit Mass
Mass of a molecule of an ionic compound
It is also equal to the sum of atomic masses of all the elements present in the molecule
โ Mole Concept:
โMole:
Unit of amount of substance.
One mole amount of substance that contains as many particles or entities as there are atoms in exactly 12 g of the 12C isotope.
โMolar mass:
Mass of one mole of a substance in gram
Molar mass in gram in numerically equal to atomic/molecular/formula mass in amu or u.
๐10โค1
10HโO
24HโO
Saltpeter = KNOโ
Ca(OCl)Cl
ยฝHโO
Benzene = CโHโ
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