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TN 12th Computer Applications மின்னணு தரவு பரிமாற்றம் Sample Question Papers Study Material - QB365 Set A

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TN 12th Computer Applications மின் - வணிகம் Sample Question Papers Study Material - QB365 Set A

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12th Standard English Medium Physics Subject Creative 1 Mark Questions with Solution Part - I

Published on: 18/06/2021

QB365 provides detailed and simple solution for every Creative Questions in class 12 Physics Subject. It will helps to get more idea about question pattern in
every Creative questions with solution.

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Std: 12th Standard - Physics

chapter: - Creative Questions

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Questions:

Multiple Choice Question

10 x 1 = 10

An object is at a distance of 0.5 in front of a plane mirror. Distance between the object and image is ___________.

(a)

0.5 m

(b)

(c)

(d)

Electron microscope employ magnetic lenses of _______ focal lengths to obtain large magnification.

(a)

short

(b)

long

(c)

infinite

(d)

zero

Photo electron effect supports quantum nature of light because ___________.

(a)

there is a minimum frequency which no photo electrons are emitted

(b)

the maximum kinetic energy of photo electrons depends only one the frequency of light and not in intensity

(c)

even when the metal surface is faintly illuminated the photoelectrons leave the surface immedietly

(d)

All the above

An a-particle of energy 10 meV is scattered through 180^o by a fixed uranium nucleus. The distance of the closest approach is of the order of _____________.

(a)

1Å

(b)

10^-10 cm

(c)

10^-12 cm

(d)

10^-15 cm

Speed of electromagnetic waves through vacuum is equal to ______________.

(a)

\(\sqrt { { \mu }_{ 0 }{ \varepsilon }_{ 0 } } \)

(b)

\(\frac { 1 }{ \sqrt { { \mu }_{ 0 }{ \varepsilon }_{ 0 } } } \)

(c)

\(\\ \frac { \sqrt { { \mu }_{ 0 } } }{ { \varepsilon }_{ 0 } } \)

(d)

\(\sqrt { \frac { { \varepsilon }_{ 0 } }{ { \mu }_{ 0 } } } \)

When the current flowing in a circular coil is doubled and the number of turns of the coil in it is halved, the magnetic field at its center will become _____________.

(a)

four times

(b)

same

(c)

half

(d)

double

The direction of the magnetic force on a positive charge moving in a magnetic field is given by ________________.

(a)

thumb rule

(b)

left hand rule

(c)

right hand rule

(d)

cork screw rule

An emf of 12V is induced when the current in the coil changes at the rate of 40 A S^-1. The coefficient of self-induction of the coil is _______________.

(a)

0.3 H

(b)

0.003 H

(c)

30 H

(d)

4.8 H

An electron gun in a TV shoots out a beam of electrons. The beam current is 10\(\mu\)A. The charge that strikes the screen in 1 minute is ______________.

(a)

\(+600\mu C\)

(b)

\(-600\mu C\)

(c)

\(+10\mu C\)

(d)

\(-10\mu C\)

10.

The value of constant 'K' in coulomb law is _____________.

(a)

0.9 x 10⁹ Nm² C²