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Published on: 02/09/2022
QB365 provides a detailed and simple solution for every Possible Creative Questions in Class 12 Physics Subject - Retirement and Death of a Partner, English Medium. It will help Students to get more practice questions, Students can Practice these question papers in addition to score best marks.
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.
Accelerated charges would produce _____________.
sound waves
૪-rays
magnetic waves
electromagnetic waves
2.
A magnetic field is produced by ____________.
a changing electric field
a moving charge
both of them
none of them
3.
If the velocity of light in a medium is 2.25 x 108 ms-1 then the refractive index of the medium will be _______________.
1.5
0.5
1.33
1.73
4.
The existence of E.M. waves was confirmed experimentally by __________________.
Hertz
Maxwell
Huygens
Planck
5.
Which of the following is a special aspect of EM wave?
can be deflected by electric field
can be deflected by magnetic filed
can be deflected by both electric & magnetic filed
none of these
6.
Which EM waves are used in medicine to destroy cancer cells?
radio waves
IR
૪ rays
UV rays
7.
The EM waves do not transport _______________.
energy
charge
momentum
information
8.
The electric and magnetic field of an EM wave are _____________.
in phase and perpendicular to each other
in phase and parallel to each other
in opposite phase and perpendicular to each other
in opposite phase and parallel to each other
9.
Which of the following E.M waves has the longest wavelength?
Radio waves
IR
X-rays
visible
10.
Which of the following electromagnetic waves has the highest frequency?
radio waves
micro waves
X- rays
૪-rays
11.
Electromagnetic waves are produced by _____________.
static charge
moving charge
an accelerating charge
chargeless particles
12.
Speed of electromagnetic wave is the same for all ______________.
wavelength
media
intensities
frequencies
13.
Who produced the electromagnetic waves first?
J.C.Bose
Marconi
Maxwell
Hertz
14.
A radiation of energy E falls normally on a perfectly reflecting surface. Th e momentum transferred to the surface __________________.
\(\frac{E}{c}\)
2\(\frac{E}{c}\)
Ec
\(\frac { E }{ { c }^{ 2 } } \)
15.
During the propagation of electromagnetic waves in a medium __________________.
electric energy density is double of the magnetic energy density
electric energy density is half of the magnetic energy density
electric energy density is equal to the magnetic energy density
both electric and magnetic energy densities are zero
1.
(d)
electromagnetic waves
2.
(c)
both of them
3.
(c)
1.33
4.
(a)
Hertz
5.
(d)
none of these
6.
(c)
૪ rays
7.
(b)
charge
8.
(a)
in phase and perpendicular to each other
9.
(a)
Radio waves
10.
(d)
૪-rays
11.
(c)
an accelerating charge
12.
(c)
intensities
13.
(d)
Hertz
14.
(b)
2\(\frac{E}{c}\)
15.
(c)
electric energy density is equal to the magnetic energy density
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