Christiaan Huygens: Physicist, Astronomer, and Mathematician

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Who first put forward the wave theory of light?

Christiaan Huygens (correct)

Descartes

Isaac Newton

Foucault

Which physicist conducted the experiment in 1850 that confirmed the speed of light in water is less than in air?

Isaac Newton

Foucault (correct)

Christiaan Huygens

Descartes

According to the corpuscular model of light, what happens to the speed of light when a ray of light bends towards the normal on refraction?

Decreases

Increases (correct)

Reverses direction

Stays the same

What law did Descartes derive in 1637 related to light?

Snell's Law Signup and view all the answers

Which famous book by Isaac Newton further developed the corpuscular model of light?

'OPTICKS' Signup and view all the answers

What did the wave model of light predict about the speed of light when a wave bends towards the normal on refraction?

Decreases Signup and view all the answers

What is the angle known as when the angle of incidence is greater than the critical angle?

Critical angle Signup and view all the answers

What happens to the refracted wave when the angle of incidence is greater than the critical angle?

It undergoes total internal reflection Signup and view all the answers

What is the angle of reflection equal to, based on the law of reflection?

The angle of incidence Signup and view all the answers

What does the symbol 'ic' represent in the context of wave optics?

The critical angle Signup and view all the answers

What happens to a refracted wave at the critical angle?

It undergoes total internal reflection Signup and view all the answers

What is the phenomenon called when a wave undergoes total internal reflection?

TIR Signup and view all the answers

What did Christiaan Huygens discover about Saturn's rings?

He discovered the true geometry of Saturn's rings. Signup and view all the answers

In his work, what did Christiaan Huygens explain about calcite?

Its double refraction. Signup and view all the answers

Which theory of light is Christiaan Huygens known for founding?

Wave theory of light. Signup and view all the answers

What did Christiaan Huygens analyze for the first time?

Circular and simple harmonic motion. Signup and view all the answers

What law is described in the excerpt as relating to the angles of incidence and refraction?

Snell's Law of Refraction. Signup and view all the answers

In terms of refractive indices, what can be derived from Eq.(10.6)?

$n_1 \cdot \sin i = n_2 \cdot \sin r$ Signup and view all the answers

What is the phenomenon discussed in Section 10.7?

Polarisation based on the transverse nature of light waves Signup and view all the answers

Who predicted the existence of electromagnetic waves around 1855?

Maxwell Signup and view all the answers

When were radiowaves produced in the laboratory?

Around 1890 Signup and view all the answers

What is the basis of ray optics?

Rectilinear propagation of light Signup and view all the answers

In what region does light have a wavelength of about half a micrometre?

Optical region Signup and view all the answers

What experiment from school demonstrates that light travels in a straight line?

Placing three cardboards with pinholes and a candle to ensure a straight line view Signup and view all the answers

What principle is the entire field of interference based on?

Principle of Superposition Signup and view all the answers

When do two sources in a medium become coherent?

When the phase difference between their displacements does not change with time Signup and view all the answers

In the context of two coherent sources, what does it mean when waves from both sources reach a point in phase?

They will create constructive interference Signup and view all the answers

How do waves from two coherent sources behave if the distances S1P and S2P are equal?

They arrive at point P in phase Signup and view all the answers

What is the significance of the position of crests and troughs in water waves according to Figure 10.8(b)?

Shows nodal and antinodal lines Signup and view all the answers

What happens when waves from coherent sources interfere destructively at a point?

They cancel each other out Signup and view all the answers