MHT CET 2025 20th April Evening Shift | Ray Optics Question 1 | Physics

An achromatic convergent doublet of two lenses in contact has a power +2 D . The convex lens has power +5 D . The ratio of the dispersive powers of the convergent and divergent lenses is (in magnitude)

$3: 5$

$2: 5$

$4: 5$

$5: 6$

MHT CET 2025 20th April Morning Shift

MCQ (Single Correct Answer)

-0

The length of the compound microscope is 15 cm . The magnifying power for relaxed eye is 25 . If the focal length of eye lens is 6 cm then the object distance for objective lens will be

1.3 cm

1.5 cm

1.7 cm

1.9 cm

MHT CET 2025 19th April Evening Shift

MCQ (Single Correct Answer)

-0

A convex lens of focal length $\frac{1}{3} \mathrm{~m}$ forms a real, inverted image twice the size of the object. The distance of the object from the lens is

0.5 m

0.166 m

0.33 m

1 m

MHT CET 2025 19th April Morning Shift

MCQ (Single Correct Answer)

-0

For a thin prism, $\delta_1$ is the angle of deviation produced, when prism is placed in air. When the prism is immersed in water, the angle of deviation produced is $\delta_2$. Given ${ }_{\mathrm{a}} \mu_{\mathrm{g}}=\frac{3}{2}$ and ${ }_{\mathrm{a}} \mu_{\mathrm{w}}=\frac{4}{3}$. The ratio $\delta_2: \delta_1$ is

$1: 2$

$1: 4$

$1: 8$

$4: 1$

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