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PHXII10:WAVE OPTICS

367661 Red light is generally used to observe diffraction pattern from single slit. If green light is used instead of red light, then diffraction pattern:

1 Will be more clear

2 Will be contracted

3 Will be expanded

4 Will not visualise

Explanation:

Angular width of central maxima $\propto λ$
$λ_{R} > λ_{G}$ . So red light will produced wide central maxima.

PHXII10:WAVE OPTICS

367662 The width of the diffraction band varies

1 inversely as the wavelength

2 directly as the width of the slit

3 directly as the distance between the slit and the screen

4 inversely as the size of the source from which the slit is illuminated

Explanation:

Width of the diffraction band is given by $β = \frac{λ D}{d}$ where, $D =$ distance between slit and the screen, $λ =$ wavelength of light used and $d =$ width of slit.
Hence, width of the diffraction band varies directly as the distance between the slit and the screen.

PHXII10:WAVE OPTICS

367663 Statement A :
Coloured spectrum is seen when we look through a muslin cloth.
Statement B :
It is due the diffraction of white light on passing through fine slits.

1 Statement A is correct but Statement B is incorrect.

2 Statement A is incorrect but Statement B is correct.

3 Both Statements are correct.

4 Both Statements are incorrect.

PHXII10:WAVE OPTICS

367664 Which of the following rays give maximum diffraction?

1

X

-ray

2 Light ray

3

γ - r a y

4 Radio wave

PHXII10:WAVE OPTICS

367665 Diffraction and interference of light refers to:

1 Quantum nature of light

2 Wave nature of light

3 Transverse nature of light

4 Electromagnetic nature of light

PHXII10:WAVE OPTICS

367661 Red light is generally used to observe diffraction pattern from single slit. If green light is used instead of red light, then diffraction pattern:

1 Will be more clear

2 Will be contracted

3 Will be expanded

4 Will not visualise

Explanation:

Angular width of central maxima $\propto λ$
$λ_{R} > λ_{G}$ . So red light will produced wide central maxima.

PHXII10:WAVE OPTICS

367662 The width of the diffraction band varies

1 inversely as the wavelength

2 directly as the width of the slit

3 directly as the distance between the slit and the screen

4 inversely as the size of the source from which the slit is illuminated

Explanation:

Width of the diffraction band is given by $β = \frac{λ D}{d}$ where, $D =$ distance between slit and the screen, $λ =$ wavelength of light used and $d =$ width of slit.
Hence, width of the diffraction band varies directly as the distance between the slit and the screen.

PHXII10:WAVE OPTICS

367663 Statement A :
Coloured spectrum is seen when we look through a muslin cloth.
Statement B :
It is due the diffraction of white light on passing through fine slits.

1 Statement A is correct but Statement B is incorrect.

2 Statement A is incorrect but Statement B is correct.

3 Both Statements are correct.

4 Both Statements are incorrect.

PHXII10:WAVE OPTICS

367664 Which of the following rays give maximum diffraction?

1

X

-ray

2 Light ray

3

γ - r a y

4 Radio wave

PHXII10:WAVE OPTICS

367665 Diffraction and interference of light refers to:

1 Quantum nature of light

2 Wave nature of light

3 Transverse nature of light

4 Electromagnetic nature of light

PHXII10:WAVE OPTICS

367661 Red light is generally used to observe diffraction pattern from single slit. If green light is used instead of red light, then diffraction pattern:

1 Will be more clear

2 Will be contracted

3 Will be expanded

4 Will not visualise

Explanation:

Angular width of central maxima $\propto λ$
$λ_{R} > λ_{G}$ . So red light will produced wide central maxima.

PHXII10:WAVE OPTICS

367662 The width of the diffraction band varies

1 inversely as the wavelength

2 directly as the width of the slit

3 directly as the distance between the slit and the screen

4 inversely as the size of the source from which the slit is illuminated

Explanation:

Width of the diffraction band is given by $β = \frac{λ D}{d}$ where, $D =$ distance between slit and the screen, $λ =$ wavelength of light used and $d =$ width of slit.
Hence, width of the diffraction band varies directly as the distance between the slit and the screen.

PHXII10:WAVE OPTICS

367663 Statement A :
Coloured spectrum is seen when we look through a muslin cloth.
Statement B :
It is due the diffraction of white light on passing through fine slits.

1 Statement A is correct but Statement B is incorrect.

2 Statement A is incorrect but Statement B is correct.

3 Both Statements are correct.

4 Both Statements are incorrect.

PHXII10:WAVE OPTICS

367664 Which of the following rays give maximum diffraction?

1

X

-ray

2 Light ray

3

γ - r a y

4 Radio wave

PHXII10:WAVE OPTICS

367665 Diffraction and interference of light refers to:

1 Quantum nature of light

2 Wave nature of light

3 Transverse nature of light

4 Electromagnetic nature of light

PHXII10:WAVE OPTICS

367661 Red light is generally used to observe diffraction pattern from single slit. If green light is used instead of red light, then diffraction pattern:

1 Will be more clear

2 Will be contracted

3 Will be expanded

4 Will not visualise

Explanation:

Angular width of central maxima $\propto λ$
$λ_{R} > λ_{G}$ . So red light will produced wide central maxima.

PHXII10:WAVE OPTICS

367662 The width of the diffraction band varies

1 inversely as the wavelength

2 directly as the width of the slit

3 directly as the distance between the slit and the screen

4 inversely as the size of the source from which the slit is illuminated

Explanation:

Width of the diffraction band is given by $β = \frac{λ D}{d}$ where, $D =$ distance between slit and the screen, $λ =$ wavelength of light used and $d =$ width of slit.
Hence, width of the diffraction band varies directly as the distance between the slit and the screen.

PHXII10:WAVE OPTICS

367663 Statement A :
Coloured spectrum is seen when we look through a muslin cloth.
Statement B :
It is due the diffraction of white light on passing through fine slits.

1 Statement A is correct but Statement B is incorrect.

2 Statement A is incorrect but Statement B is correct.

3 Both Statements are correct.

4 Both Statements are incorrect.

PHXII10:WAVE OPTICS

367664 Which of the following rays give maximum diffraction?

1

X

-ray

2 Light ray

3

γ - r a y

4 Radio wave

PHXII10:WAVE OPTICS

367665 Diffraction and interference of light refers to:

1 Quantum nature of light

2 Wave nature of light

3 Transverse nature of light

4 Electromagnetic nature of light

PHXII10:WAVE OPTICS

367661 Red light is generally used to observe diffraction pattern from single slit. If green light is used instead of red light, then diffraction pattern:

1 Will be more clear

2 Will be contracted

3 Will be expanded

4 Will not visualise

Explanation:

Angular width of central maxima $\propto λ$
$λ_{R} > λ_{G}$ . So red light will produced wide central maxima.

PHXII10:WAVE OPTICS

367662 The width of the diffraction band varies

1 inversely as the wavelength

2 directly as the width of the slit

3 directly as the distance between the slit and the screen

4 inversely as the size of the source from which the slit is illuminated

Explanation:

Width of the diffraction band is given by $β = \frac{λ D}{d}$ where, $D =$ distance between slit and the screen, $λ =$ wavelength of light used and $d =$ width of slit.
Hence, width of the diffraction band varies directly as the distance between the slit and the screen.

PHXII10:WAVE OPTICS

367663 Statement A :
Coloured spectrum is seen when we look through a muslin cloth.
Statement B :
It is due the diffraction of white light on passing through fine slits.

1 Statement A is correct but Statement B is incorrect.

2 Statement A is incorrect but Statement B is correct.

3 Both Statements are correct.

4 Both Statements are incorrect.

PHXII10:WAVE OPTICS

367664 Which of the following rays give maximum diffraction?

1

X

-ray

2 Light ray

3

γ - r a y

4 Radio wave

PHXII10:WAVE OPTICS

367665 Diffraction and interference of light refers to:

1 Quantum nature of light

2 Wave nature of light

3 Transverse nature of light

4 Electromagnetic nature of light