Refer to NEET Physics Electromagnetic Waves MCQs provided below available for download in Pdf. The MCQ Questions for Full Syllabus Physics with answers are aligned as per the latest syllabus and exam pattern suggested by NEET, NCERT and KVS. Multiple Choice Questions for Electromagnetic Waves are an important part of exams for Full Syllabus Physics and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for NEET Full Syllabus Physics and also download more latest study material for all subjects
MCQ for Full Syllabus Physics Electromagnetic Waves
Full Syllabus Physics students should refer to the following multiple-choice questions with answers for Electromagnetic Waves in Full Syllabus.
Electromagnetic Waves MCQ Questions Full Syllabus Physics with Answers
Question: One requires 11 eV of energy to dissociate a carbon monoxide molecule into carbon and oxygen atoms. The minimum frequency of the appropriate electromagnetic radiation to achieve the dissociation lies in
a) ultraviolet region
b) visible region
c) infrared region
d) microwave region
Answer: ultraviolet region
Question:
a)
b)
c)
d) None of these
Answer:
Question: Light with an energy flux of 20 W/cm2 falls on a non-reflecting surface at normal incidence. If the surface has an area of 30 cm2, the total momentum delivered (for complete absorption) during 30 min is
a) 36 × 10–4 kg-m/s
b) 1.08 × 107 kg-m/s
c) 36 × 10–5 kg-m/s
d) 108 × 104 kg-m/s
Answer: 36 × 10–4 kg-m/s
Question: The electric field intensity produced by the radiations coming from 100 W bulb at a 3 m distance is E. The electric field intensity produced by the radiations coming from 50 W bulb at the same distance is
a)
b)
c)
d) 2E
Answer:
Question: If E and B represent electric and magnetic field vectors of the electromagnetic wave, the direction of propagation of electromagnetic wave is along
a) B × E
b) E × B
c) B
d) E
Answer: B × E
Question: The ratio of contributions made by the electric field and magnetic field components to the intensity of an EM wave is
a) 1 : 1
b) c : 1
c) c2 : 1
d) None of these
Answer: 1 : 1
More Questions..................................
Question: An EM wave radiates outwards from a dipole antenna, with E0 as the amplitude of its electric field vector. The electric field E0 which transports significant energy from the source falls off as
a)
b)
c)
d) remains constant
Answer:
Question:
a) The given electromagnetic wave is plane polarised
b)
c) The given electromagnetic field is circularly polarised
d) None of these
Answer: The given electromagnetic wave is plane polarised
Question: Light with an energy flux of 25 × 104 Wm– 2 falls on a perfectly reflecting surface at normal incidence. If the surface area is 15 cm2, the average force exerted on the surface is:
a) 2.50 × 10– 6 N
b) 3.0 × 10– 6 N
c) 1.20 × 10– 6 N
d) None of these
Answer: 2.50 × 10– 6 N
Question: Which of the following are not electromagnetic waves?
a)
b)
c) X-rays.
d) cosmic rays
Answer:
Question: Assertion : Environmental damage has increased the amount of ozone in the atmosphere.
Reason : Increase of ozone increases the amount of ultraviolet radiation on earth.
a) Assertion is correct, reason is correct; reason is a correct explanation for assertion
b) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
c) Assertion is incorrect, reason is correct
d) Assertion is correct, reason is incorrect
Answer: Assertion is correct, reason is correct; reason is a correct explanation for assertion
Question: During the propagation of electromagnetic waves in a medium:
a) Electric energy density is equal to the magnetic energy density
b) Electric energy density is half of the magnetic energy density.
c) Electric energy density is double of the magnetic energy density
d) Both electric and magnetic energy densities are zero
Answer: Electric energy density is equal to the magnetic energy density
Question: The energy of the em waves is of the oder of 15 keV. To which part of the spectrum does it belong?
a) X-rays
b) Ultraviolet rays
c) Infra-red rays
d) None of these
Answer: X-rays
Question: Out of the following options which one can be used to produce a propagating electromagnetic wave ?
a) An accelerating charge
b) A chargeless particle
c) A stationary charge
d) A charge moving at constant velocity
Answer: An accelerating charge
Question: Assertion : Radio waves can be polarised.
Reason : Sound waves in air are longitudinal in nature.
a) Assertion is correct, reason is incorrect
b) Assertion is incorrect, reason is correct.
c) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
d) Assertion is correct, reason is correct; reason is a correct explanation for assertion.
Answer: Assertion is correct, reason is incorrect
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MCQs for Electromagnetic Waves Physics Full Syllabus
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