Wave Optics Test

Result

Wave Optics Test - 27

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Weekly Quiz Competition

Question 1
4 / -1

Two light source are said to be coherent if they are obtained from

A
Two independent point sources emitting light of the same wavelength

B
A single point source

C
A wide source

D
Two ordinary bulbs emitting light of different wavelengths
Question 2
4 / -1

Wavelength of light of frequency 100 Hz

A
2 × 10⁶ m

B
3 × 10⁶ M

C
4 × 10⁶ m

D
5 × 10⁶ m

Solution
Question 3
4 / -1

Evidence for the wave nature of light cannot be obtained from

A
Reflection

B
Doppler effect

C
Interference

D
Diffraction
Question 4
4 / -1

In Huygens\'s wave theory, the locus of all points in the same state of vibration is called

A
A half period zone

B
Oscillator

C
A wave-front

D
A ray
Question 5
4 / -1

Wavefront means

A
All particles in it have same phase

B
All particles have opposite phase of vibrations

C
Few particles are in same phase, rest are in opposite phase

D
None of the above
Question 6
4 / -1

Wavefront of a wave has direction with wave motion

A
Parallel

B
Perpendicular

C
Opposite

D
At an angle of θ
Question 7
4 / -1

Which one of the following phenomena is not explained by Huygen\'s construction of wavefront?

A
Refraction

B
Reflection

C
Diffraction

D
Origin of spectra
Question 8
4 / -1

A thin film of soap solution (µ_s = 1.4) lies on the top of a glass plate (µ_g = 1.5). When visible light is incident almost normal to the plate, two adjacent reflection maxima are observed at two wavelengths 420 and 630 nm. The minimum thickness of the soap solution are

A
420 nm

B
450 nm

C
630 nm

D
1260 nm

Solution
Question 9
4 / -1

Which of the following is conserved when light waves interfere?

A
Intensity

B
Energy

C
Amplitude

D
Momentum
Question 10
4 / -1

Intensity of light depends upon

A
Velocity

B
Wavelength

C
Amplitude

D
Frequency

Solution

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Wave Optics Test - 27

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Wave Optics Test - 27

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Question 1

Two independent point sources emitting light of the same wavelength

A single point source

A wide source

Two ordinary bulbs emitting light of different wavelengths

Question 2

2 × 106 m

3 × 106 M

4 × 106 m

5 × 106 m

Solution

Question 3

Reflection

Doppler effect

Interference

Diffraction

Question 4

A half period zone

Oscillator

A wave-front

A ray

Question 5

All particles in it have same phase

All particles have opposite phase of vibrations

Few particles are in same phase, rest are in opposite phase

None of the above

Question 6

Parallel

Perpendicular

Opposite

At an angle of θ

Question 7

Refraction

Reflection

Diffraction

Origin of spectra

Question 8

420 nm

450 nm

630 nm

1260 nm

Solution

Question 9

Intensity

Energy

Amplitude

Momentum

Question 10

Velocity

Wavelength

Amplitude

Frequency

Solution

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2 × 10⁶ m

3 × 10⁶ M

4 × 10⁶ m

5 × 10⁶ m