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1
MHT CET 2024 10th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A convex lens of focal length 40 cm is in contact with a concave lens of focal length 25 cm. The power of combination is

A
$-1.5 \mathrm{D}$
B
$\mathrm{-6.5 D}$
C
$\mathrm{+6.5 D}$
D
$\mathrm{+1.5 D}$
2
MHT CET 2024 10th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In compound microscope, the focal length and the aperture of the objective used is respectively

A
large and large
B
large and small.
C
small and large.
D
small and small.
3
MHT CET 2024 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A ray of light is incident on a medium of refractive index ' $\mu$ ' at an angle of incidence ' $i$ '. On refraction in the medium ' $\delta$ ' is the angle of deviation. Then

A
$\frac{1}{\mu}=\cos \delta-\frac{\sin \delta}{\tan i}$
B
$\frac{1}{\mu}=\sin \delta-\frac{\cos \delta}{\tan i}$
C
$\frac{1}{\mu}=\cos \delta-\sin \delta \cdot \tan i$.
D
$\frac{1}{\mu}=\sin \delta-\cos \delta \cdot \tan i$
4
MHT CET 2024 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Simple microscope is used to see the object first in blue light and then a red light. Due to the change from blue to red light, its magnifying power

A
decreases
B
increases
C
remains same
D
first increases and then decreases
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