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WAVE OPTICS

283111 Two coherent sources of light interfere and produce fringe pattern on a screen. For central maximum, the phase difference between the two waves will be

1 zero

2

π

3

3 π / 2

4

π / 2

Explanation:

:
original image
For central maximum, $Δ x = 0$
Phase difference $(Δ ϕ) = \frac{2 π}{λ} \times Δ x$
$Δ ϕ = 0$

NEET (Sep.) - 1995

WAVE OPTICS

283112 The wavelength of light of frequency $100 Hz$ is

1

2 \times 10^{6} m

2

3 \times 10^{6} m

3

4 \times 10^{6} m

4

5 \times 10^{6} m

Explanation:

: Given, frequency (f) $= 100 Hz$
Speed of light $(c) = 3 \times 10^{8} m / s$
We know that,
$λ = \frac{c}{f} = \frac{3 \times 10^{8}}{100} = 3 \times 10^{6} m$

AIPMT- 1999

WAVE OPTICS

283115 Consider the following two statements $A$ and $B$ , and identify the correct choice in the given answers:
A: In Huygen's eye piece, the two plane surface of two plano-convex lenses face towards the eye.
B: In Huygen's eye piece, the focal length of the field lens is equal to the focal length of eye lens.

1 both

A

and

B

are true

2

A

is true but

B

is false

3

A

is false but

B

is true

4 both

A

and

B

are false

Explanation:

: In Huygen's eye piece,
original image
It consists of two coaxial plano-convex lenses of focal length $3 f$ and $f$ separated by a distance $2 f$ .
So, $f_{1} = 3 f, f_{2} = f$ and $d = 2 f$
The two plane surfaces of two plano-convex lenses faces towards the eye.

AP EAMCET(Medical)-2001

WAVE OPTICS

283061 The shape of wave front of light diverging from point source

1 spherical

2 planar

3 cylindrical

4 circular

TS- EAMCET-11.09.2020

WAVE OPTICS

283111 Two coherent sources of light interfere and produce fringe pattern on a screen. For central maximum, the phase difference between the two waves will be

1 zero

2

π

3

3 π / 2

4

π / 2

Explanation:

:
original image
For central maximum, $Δ x = 0$
Phase difference $(Δ ϕ) = \frac{2 π}{λ} \times Δ x$
$Δ ϕ = 0$

NEET (Sep.) - 1995

WAVE OPTICS

283112 The wavelength of light of frequency $100 Hz$ is

1

2 \times 10^{6} m

2

3 \times 10^{6} m

3

4 \times 10^{6} m

4

5 \times 10^{6} m

Explanation:

: Given, frequency (f) $= 100 Hz$
Speed of light $(c) = 3 \times 10^{8} m / s$
We know that,
$λ = \frac{c}{f} = \frac{3 \times 10^{8}}{100} = 3 \times 10^{6} m$

AIPMT- 1999

WAVE OPTICS

283115 Consider the following two statements $A$ and $B$ , and identify the correct choice in the given answers:
A: In Huygen's eye piece, the two plane surface of two plano-convex lenses face towards the eye.
B: In Huygen's eye piece, the focal length of the field lens is equal to the focal length of eye lens.

1 both

A

and

B

are true

2

A

is true but

B

is false

3

A

is false but

B

is true

4 both

A

and

B

are false

Explanation:

: In Huygen's eye piece,
original image
It consists of two coaxial plano-convex lenses of focal length $3 f$ and $f$ separated by a distance $2 f$ .
So, $f_{1} = 3 f, f_{2} = f$ and $d = 2 f$
The two plane surfaces of two plano-convex lenses faces towards the eye.

AP EAMCET(Medical)-2001

WAVE OPTICS

283061 The shape of wave front of light diverging from point source

1 spherical

2 planar

3 cylindrical

4 circular

TS- EAMCET-11.09.2020

WAVE OPTICS

283111 Two coherent sources of light interfere and produce fringe pattern on a screen. For central maximum, the phase difference between the two waves will be

1 zero

2

π

3

3 π / 2

4

π / 2

Explanation:

:
original image
For central maximum, $Δ x = 0$
Phase difference $(Δ ϕ) = \frac{2 π}{λ} \times Δ x$
$Δ ϕ = 0$

NEET (Sep.) - 1995

WAVE OPTICS

283112 The wavelength of light of frequency $100 Hz$ is

1

2 \times 10^{6} m

2

3 \times 10^{6} m

3

4 \times 10^{6} m

4

5 \times 10^{6} m

Explanation:

: Given, frequency (f) $= 100 Hz$
Speed of light $(c) = 3 \times 10^{8} m / s$
We know that,
$λ = \frac{c}{f} = \frac{3 \times 10^{8}}{100} = 3 \times 10^{6} m$

AIPMT- 1999

WAVE OPTICS

283115 Consider the following two statements $A$ and $B$ , and identify the correct choice in the given answers:
A: In Huygen's eye piece, the two plane surface of two plano-convex lenses face towards the eye.
B: In Huygen's eye piece, the focal length of the field lens is equal to the focal length of eye lens.

1 both

A

and

B

are true

2

A

is true but

B

is false

3

A

is false but

B

is true

4 both

A

and

B

are false

Explanation:

: In Huygen's eye piece,
original image
It consists of two coaxial plano-convex lenses of focal length $3 f$ and $f$ separated by a distance $2 f$ .
So, $f_{1} = 3 f, f_{2} = f$ and $d = 2 f$
The two plane surfaces of two plano-convex lenses faces towards the eye.

AP EAMCET(Medical)-2001

WAVE OPTICS

283061 The shape of wave front of light diverging from point source

1 spherical

2 planar

3 cylindrical

4 circular

TS- EAMCET-11.09.2020

WAVE OPTICS

283111 Two coherent sources of light interfere and produce fringe pattern on a screen. For central maximum, the phase difference between the two waves will be

1 zero

2

π

3

3 π / 2

4

π / 2

Explanation:

:
original image
For central maximum, $Δ x = 0$
Phase difference $(Δ ϕ) = \frac{2 π}{λ} \times Δ x$
$Δ ϕ = 0$

NEET (Sep.) - 1995

WAVE OPTICS

283112 The wavelength of light of frequency $100 Hz$ is

1

2 \times 10^{6} m

2

3 \times 10^{6} m

3

4 \times 10^{6} m

4

5 \times 10^{6} m

Explanation:

: Given, frequency (f) $= 100 Hz$
Speed of light $(c) = 3 \times 10^{8} m / s$
We know that,
$λ = \frac{c}{f} = \frac{3 \times 10^{8}}{100} = 3 \times 10^{6} m$

AIPMT- 1999

WAVE OPTICS

283115 Consider the following two statements $A$ and $B$ , and identify the correct choice in the given answers:
A: In Huygen's eye piece, the two plane surface of two plano-convex lenses face towards the eye.
B: In Huygen's eye piece, the focal length of the field lens is equal to the focal length of eye lens.

1 both

A

and

B

are true

2

A

is true but

B

is false

3

A

is false but

B

is true

4 both

A

and

B

are false

Explanation:

: In Huygen's eye piece,
original image
It consists of two coaxial plano-convex lenses of focal length $3 f$ and $f$ separated by a distance $2 f$ .
So, $f_{1} = 3 f, f_{2} = f$ and $d = 2 f$
The two plane surfaces of two plano-convex lenses faces towards the eye.

AP EAMCET(Medical)-2001

WAVE OPTICS

283061 The shape of wave front of light diverging from point source

1 spherical

2 planar

3 cylindrical

4 circular

TS- EAMCET-11.09.2020