MHT CET 2025 25th April Evening Shift | Ray Optics Question 2 | Physics

A glass cube of length 21 cm has a small air bubble trapped inside. When viewed normally from the opposite face, its apparent distance is 6 cm . The refractive index of glass and the actual distance of the air bubble from the first surface respectively are

$1.5,12 \mathrm{~cm}$

$1.55,14 \mathrm{~cm}$

$1.6,11 \mathrm{~cm}$

$1.5,9 \mathrm{~cm}$

MHT CET 2025 25th April Morning Shift

MCQ (Single Correct Answer)

-0

The image of an object approaching a convex mirror of radius of curvature 20 m along its optical axis is observed to move from $\frac{25}{3} \mathrm{~m}$ to $\frac{50}{7} \mathrm{~m}$ in 30 second. The speed of the object in $\mathrm{km} / \mathrm{hr}$ is

2.5

MHT CET 2025 23rd April Evening Shift

MCQ (Single Correct Answer)

-0

A convex lens of refractive index 1.5 has power 3D. It is placed in a liquid of refractive index 2. The new power of the lens is

3 D

0.75 D

1.5 D

2 D

MHT CET 2025 23rd April Evening Shift

MCQ (Single Correct Answer)

-0

Select the correct statement.

If the Brewster's angle for the light propagation from air to glass is ' $\theta$ ', then Brewster's angle for the light propagating from glass to air is $\left(\frac{\pi}{2}-\theta\right)$.

The Brewster's angle for the light propagating from the glass to air is $\tan ^{-1}(\mu)$ where $\mu$ is the refractive index of glass.

The Brewster's angle for light propagating from air to glass is ' $\theta$ ' then Brewster's angle for the light propagating from glass to air is $(\pi+\theta)$.

The Brewster's angle for light propagating from glass to air is $\tan (\mu)$ where is $\mu$ the refractive index of glass.

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