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12th Standard Physics English Medium Free Online Test Creative One Mark questions with Answer Key - Part Two

Published on: 12/10/2020

12th Standard Physics English Medium Free Online Test Creative One Mark questions with Answer Key Part Two

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.

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Std: 12th Standard - Physics

chapter: - Model Question paper

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Questions:

Multiple Choice Question

10 x 1 = 10

If the frequency of light in a photo electron experiment is doubled the stopping potential will ______________.

(a)

be doubled

(b)

be halved

(c)

become more than double

(d)

become less than double.

The direction of magnetic dipole moment is ______

(a)

from South pole to North pole

(b)

from North to South pole

(c)

from East to West

(d)

from West to East

The expression for water equivalent is _____________.

(a)

W = H (θ₂,θ₁)

(b)

W = \(\frac { { \theta }_{ 2 }-{ \theta }_{ 1 } }{ H } \)

(c)

both (a) and (b)

(d)

W = \(\frac { H }{ { \theta }_{ 2 }-{ \theta }_{ 1 } } \)

The most suitable metal for permanent magnet is ______________.

(a)

copper

(b)

aluminium

(c)

steel

(d)

iron

Which current- time graph represents the steady movement of short magnet through a coil XY?

(a)

(b)

(c)

(d)

The resistance of the wire varies inversely as _________________.

(a)

area of cross section

(b)

resistivity

(c)

length

(d)

temperature

Which of the following is an identical?

(a)

germanium, silicon

(b)

silver, wood

(c)

aluminum, constantan

(d)

bakelite, iron

If the specific resistance of a potentiometer wire is 10^-7 Om and current flowing through it is 0.1 amp, cross-sectional area of wire is 10^-6 m², then potential gradient will be ________________.

(a)

10^-2v/m

(b)

10^-4 v/m

(c)

10^-6v/m

(d)

10^-8v/m

A condenser is charged to a potential of 200V and has a charge of 0.1C. The energy stored in it is _____________

(a)

1 J

(b)