Electromagnetic Waves (NEST (National Entrance Screening Test) Physics): Questions 1 - 2 of 2

Access detailed explanations (illustrated with images and videos) to 58 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Subscription can be renewed yearly absolutely FREE! View Sample Explanation or View Features.

Rs. 100.00 or

How to register?

Question number: 1

» Electromagnetic Waves » Electromagnetic Waves & Characteristics

Edit

Appeared in Year: 2019

Essay Question▾

Describe in Detail

Consider three straight, coplanar, parallel wires of infinite length where the distance between adjacent wires is . Each wire carries a current in the same direction. The perpendicular distance from the middle wire (on either side) where the magnetic field vanishes is

Image shows The Magnetic field vanishes

Image Shows the Magnetic Field Vanishes

Image shows The Magnetic field vanishes

Explanation

Let the perpendicular distance from the middle wire be . Then the distance of wire and wires will be

Now magnetic field at point (at a distance from middle wire): -

Magnetic field due to wire

… (52 more words) …

Question number: 2

» Electromagnetic Waves » Electromagnetic Waves & Characteristics

Edit

Appeared in Year: 2019

MCQ▾

Question

The sketch shown below illustrates the apparatus and results for a famous experiment, the graph is a polar plot of the number of electrons received in the detector.

Choices

Choice (4) Response

a.

There is magnetic domain inside a nickel sample

b.

Electron have spin half

c.

Electron in a beam can behave as wave

d.

The energy levels of an atom in a metal are quantised

Developed by: