Physics Chapter Physical Optics Mcqs

#57
The speed of light in a medium of refractive index \( \mu \) is given by:

A) \( \mu c \)

B) \( \frac{c}{\mu} \)

C) \( c + \mu \)

D) \( c - \mu \)

Answer: B

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#58
In a transverse wave, the direction of vibration of the particles is:

A) Parallel to the direction of wave propagation

B) Perpendicular to the direction of wave propagation

C) At 45° to the direction of wave propagation

D) Random

Answer: B

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#59
The time taken for one complete oscillation of a wave is called its:

A) Frequency

B) Wavelength

C) Period

D) Amplitude

Answer: C

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#60
The number of oscillations per second is called the:

A) Wavelength

B) Period

C) Frequency

D) Speed

Answer: C

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#61
For a given medium, the frequency of a wave:

A) Changes with wavelength

B) Is independent of wavelength

C) Is always constant

D) Is zero

Answer: C

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#62
The law of reflection can be derived from:

A) Newton's laws

B) Huygens' principle

C) Einstein's postulates

D) Maxwell's equations

Answer: B

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#63
In a standing wave, the points that have zero amplitude are called:

A) Antinodes

B) Nodes

C) Crests

D) Troughs

Answer: B

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#64
The Doppler effect is the change in the observed frequency of a wave due to the:

A) Relative motion between the source and the observer

B) Change in the medium

C) Change in temperature

D) Interference of waves

Answer: A

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Physics

#57 The speed of light in a medium of refractive index \( \mu \) is given by:

A) \( \mu c \) B) \( \frac{c}{\mu} \) C) \( c + \mu \) D) \( c - \mu \)

Comments:

#58 In a transverse wave, the direction of vibration of the particles is:

A) Parallel to the direction of wave propagation B) Perpendicular to the direction of wave propagation C) At 45° to the direction of wave propagation D) Random

Comments:

#59 The time taken for one complete oscillation of a wave is called its:

A) Frequency B) Wavelength C) Period D) Amplitude

Comments:

#60 The number of oscillations per second is called the:

A) Wavelength B) Period C) Frequency D) Speed

Comments:

#61 For a given medium, the frequency of a wave:

A) Changes with wavelength B) Is independent of wavelength C) Is always constant D) Is zero

Comments:

#62 The law of reflection can be derived from:

A) Newton's laws B) Huygens' principle C) Einstein's postulates D) Maxwell's equations

Comments:

#63 In a standing wave, the points that have zero amplitude are called:

A) Antinodes B) Nodes C) Crests D) Troughs

Comments:

#64 The Doppler effect is the change in the observed frequency of a wave due to the:

A) Relative motion between the source and the observer B) Change in the medium C) Change in temperature D) Interference of waves

Comments:

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#57
The speed of light in a medium of refractive index \( \mu \) is given by:

A) \( \mu c \)

B) \( \frac{c}{\mu} \)

C) \( c + \mu \)

D) \( c - \mu \)

#58
In a transverse wave, the direction of vibration of the particles is:

A) Parallel to the direction of wave propagation

B) Perpendicular to the direction of wave propagation

C) At 45° to the direction of wave propagation

D) Random

#59
The time taken for one complete oscillation of a wave is called its:

A) Frequency

B) Wavelength

C) Period

D) Amplitude

#60
The number of oscillations per second is called the:

A) Wavelength

B) Period

C) Frequency

D) Speed

#61
For a given medium, the frequency of a wave:

A) Changes with wavelength

B) Is independent of wavelength

C) Is always constant

D) Is zero

#62
The law of reflection can be derived from:

A) Newton's laws

B) Huygens' principle

C) Einstein's postulates

D) Maxwell's equations

#63
In a standing wave, the points that have zero amplitude are called:

A) Antinodes

B) Nodes

C) Crests

D) Troughs

#64
The Doppler effect is the change in the observed frequency of a wave due to the:

A) Relative motion between the source and the observer

B) Change in the medium

C) Change in temperature

D) Interference of waves