1
MHT CET 2024 4th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A convex lens of refractive index $\frac{3}{2}$ has a power 2.5. If it is placed in a liquid of refractive index 2, the new power of the lens is

A
2.5 D
B
$-$2.5 D
C
1.25 D
D
$-$1.25 D
2
MHT CET 2024 4th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Some water is filled in a container of height 30 cm . If is is to appear half filled to the observer when viewed from the top of the container, the height upto which water should be filled in it, is [Refractive index of water $=\frac{4}{3}$]

A
15 cm
B
18 cm
C
20 cm
D
24 cm
3
MHT CET 2024 4th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In an equilateral prism the ray undergoes minimum deviation when it is incident at an angle of $50^{\circ}$. The angle of minimum deviation is

A
$50^{\circ}$
B
$40^{\circ}$
C
$25^{\circ}$
D
$20^{\circ}$
4
MHT CET 2024 4th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A person is observing a bacteria through a compound microscope. For better analysis and to improve the resolving power he should

A
increase the wavelength of light.
B
increase the refractive index of the medium between the object and objective lens.
C
decrease the focal length of the eye-piece.
D
decrease the diameter of the objective lens.
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