1
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

When a biconvex lens of glass of refractive index 1.5 is dipped in a liquid, it acts like a plane sheet of paper. This means the refractive index of the liquid is

A
Greater than that of glass
B
Less than that of glass
C
Equal to that of glass
D
Less than one
2
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

A hollow prism is filled with water and placed in air. It will deviate the incident rays

A
Towards or away from the base
B
Away from the base
C
Parallel to the base
D
Towards the base
3
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

An air bubble in water $$\left(\mu=\frac{4}{3}\right)$$ is shown in figure. The apparent depth of the image of the bubble in plane mirror viewed by observer is.

A
16 cm
B
18 cm
C
24 cm
D
12 cm
4
COMEDK 2023 Morning Shift
MCQ (Single Correct Answer)
+1
-0

A fish in water (refractive index $$n$$ ) looks at a bird vertically above in the air. If $$y$$ is the height of the bird and $$x$$ is the depth of the fish from the surface, then the distance of the bird as estimated by the fish is

A
$$x+y\left(1-\frac{1}{n}\right)$$
B
$$x+n y$$
C
$$x+y\left(1+\frac{1}{n}\right)$$
D
$$y+x\left(1-\frac{1}{n}\right)$$
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