# Ray Optics (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 54 - 58 of 105

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## Question number: 54

» Ray Optics » Magnification

MCQ▾

### Question

A concave minor of focal length f 0 (in magnitude) produces a reals image n time the size of the object. What is the distance of the object from the mirror?

### Choices

Choice (4) Response

a.

b.

c.

d.

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## Question number: 55

» Ray Optics » Reflection and Refraction of Light » Smooth Surface

MCQ▾

### Question

A girl stands at a distance 30 cm from the mirror. She is able to see her erect image but of 1/5 height of actual height. The mirror will be:

### Choices

Choice (4) Response

a.

Concave mirror

b.

Convex mirror

c.

Plane convex mirror

d.

Plane mirror

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## Question number: 56

» Ray Optics » Reflection and Refraction of Light » Spherical Surface

Assertion-Reason▾

### Assertion (Ꭺ)

When an object is placed between two plane parallel mirrors. Then all the images found are of different intensity.

### Reason (Ꭱ)

In case of plane parallel mirrors, only two images are possible.

### Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

Ꭺ is true but Ꭱ is false

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Ꭺ is false but Ꭱ is true

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## Question number: 57

» Ray Optics » Power of a Lens

MCQ▾

### Question

An equiconvex lens has a power of 5 diopter. If it is made of glass of refractive index 1.5 then the radius of the curvature of each surface will be

### Choices

Choice (4) Response

a.

zero

b.

10 cm

c.

20 cm

d.

5 cm

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## Question number: 58

» Ray Optics » Lens Maker's Formula and Lens Formula

MCQ▾

### Question

In case of thin lens of focal length an object is placed at a distance from first focus and its image is formed at a distance from the second focus, find

### Choices

Choice (4) Response

a.

b.

c.

d.

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