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Published on: 12/10/2020
12th Standard Physics English Medium Free Online Test Creative 1 Mark questions Part Five
Download Tamil Nadu 12th Standard Physics question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Physics Test1.
A ray of light travels from A to B with uniform speed. On its way, it is reflected by the surface XX'. The path followed by the ray to take least time is ____________.
1
2
3
4
2.
The number of de Broglie waves of an electron in the nth orbit of an atom is ___________.
n
n-1
n+1
2n
3.
A p-n diode can be used as _______________.
condenser
amplifier
rectifier
regulator
4.
According to Einstein's photoelectric equation the plot of the K.E of the emitted photoelectrons from a metal vs the frequency of incident radiation gives a straight line where slope ____________.
depends on the nature of the metal used
depends on the intensity of the radiation
both a & b
Depends on neither a or b
5.
In Millikan's oil drop experiment, charged drop is balanced between the two plates. Now the viscous force _______________.
acts downwards
acts upwards
is zero
acts either upwards or downwards
6.
Speed of electromagnetic waves through vacuum is equal to ______________.
\(\sqrt { { \mu }_{ 0 }{ \varepsilon }_{ 0 } } \)
\(\frac { 1 }{ \sqrt { { \mu }_{ 0 }{ \varepsilon }_{ 0 } } } \)
\(\\ \frac { \sqrt { { \mu }_{ 0 } } }{ { \varepsilon }_{ 0 } } \)
\(\sqrt { \frac { { \varepsilon }_{ 0 } }{ { \mu }_{ 0 } } } \)
7.
Parts of the energy is used in an electric motor and the remaining part of the energy is dissipated in form of _____________.
current in the resistors
heat in the resistor
voltage in the resistors
resistance in the resistor
8.
The magnitude of the induced emf in a conductor depends on the _______________.
flux density of the magnetic field
amount of flux cut
amount of flux linkages
rate of change of flux
9.
In an electrical arrangement as shown the equivalent resistance between X and Y will be
\(158.75\Omega \)
\(118.75\Omega \)
\(218.75\Omega \)
\(318.75\Omega \)
10.
The unit for electric susceptibility is
Nm2 C-2
C2 N-1 m-2
C-2Nm2
N-1 m-2C2
1.
(c)
3
2.
(a)
n
3.
(c)
rectifier
4.
(d)
Depends on neither a or b
5.
(c)
is zero
6.
(b)
\(\frac { 1 }{ \sqrt { { \mu }_{ 0 }{ \varepsilon }_{ 0 } } } \)
7.
(b)
heat in the resistor
8.
(d)
rate of change of flux
9.
(b)
\(118.75\Omega \)
10.
(b)
C2 N-1 m-2
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Tamilnadu Stateboard 12th Standard Subjects
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Chemistry
Physics
Biology
Computer Science
Business Maths and Statistics
Economics
Commerce
Accountancy
History
Computer Applications
Biology
Computer Technology
Computer Applications
Computer Science
Business Maths and Statistics
Commerce
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Maths
Chemistry
Physics
Computer Technology
History
Accountancy
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