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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction at plane surfaceMedium2 minPYQ_2017

PhysicsMediumsingle choice

When the same monochromatic ray of light travels through glass slab and through water, the number of waves in glass slab of thickness 6 cm is same as in water column of height 7 cm. If refractive index of glass is 1.5 then refractive index of water is

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Answer:

Solution:

No. of waves in glass slab = No. of waves in water column
$∴ μ_{g} . h_{g} = μ_{w} . h_{w}$
$∴ μ_{w} = \frac{μ_{g} . h_{g}}{h_{w}} = \frac{1.5 \times 6}{7}$
$∴ μ_{w} = \frac{9}{7} = 1.286$

Stream:MHT_CETSubject:PhysicsTopic:Geometrical OpticsSubtopic:Refraction at plane surface

⏱ 2mℹ️ Source: PYQ_2017

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