Statement I: When the white light passed through a prism, the red light bends lesser than yellow and violet.

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Q.
Given below are two statements:

Statement I: When the white light passed through a prism, the red light bends lesser than yellow and violet.

Statement II: The refractive indices are different for different wavelengths in dispersive medium.

In the light of the above statements, choose the correct answer from the options given below: [2024]

1 Statement I is false but Statement II is true

2 Statement I is true but Statement II is false

3 Both Statement I and Statement II are false

4 Both Statement I and Statement II are true

Ans.
(4)

As $λ_{r e d} > λ_{y e l l o w} > λ_{v i o l e t}$

Light ray with longer wavelength bends less. So red has minimum wavelength so least bends.

Solution

1 Statement I is false but Statement II is true

2 Statement I is true but Statement II is false

3 Both Statement I and Statement II are false

4 Both Statement I and Statement II are true

Ans.
(4)

As $λ_{r e d} > λ_{y e l l o w} > λ_{v i o l e t}$

Light ray with longer wavelength bends less. So red has minimum wavelength so least bends.

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Solution

1 Statement I is false but Statement II is true

2 Statement I is true but Statement II is false

3 Both Statement I and Statement II are false

4 Both Statement I and Statement II are true

Ans. (4) As λred>λyellow>λviolet Light ray with longer wavelength bends less. So red has minimum wavelength so least bends.

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Ans.
(4)

As $λ_{r e d} > λ_{y e l l o w} > λ_{v i o l e t}$

Light ray with longer wavelength bends less. So red has minimum wavelength so least bends.