Ray Optics (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 104 - 105 of 105

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Question number: 104

» Ray Optics » Reflection and Refraction of Light » Smooth Surface

Appeared in Year: 2017

MCQ▾

Question

A beam of light from a source Equation is incident normally on a plane mirror fixed at a certain distance Equation from the source. The beam is reflected back as a spot on a scale placed just above the source Equation . When the mirror is rotated through a small angle Equation , the spot of the light is found to move through a distance Equation on the scale. The angle∴Equation is given by –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 105

» Ray Optics » Deviation and Dispersion of Light by a Prism

Appeared in Year: 2017

MCQ▾

Question

A thin prism having refracting angle Equation is made of glass of refractive index Equation . This prism is combined with another thin prism of glass of refractive index Equation . This combination produces dispersion without deviation. The refracting angle of second prism should be –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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