# Ray Optics (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 51 - 53 of 105

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## Question number: 51

» Ray Optics » Deviation and Dispersion of Light by a Prism

MCQ▾

### Question

The wrong statements are

(1) The order of colors in the primary and the secondary rainbows is the same

(2) The intensity of colors in the primary and the secondary rainbows is the same

(3) The intensity of light in the primary rainbow is greater and the order of colors is the same than the secondary

(4) The intensity of light for different colors in primary rainbow is greater and the order of colors is reverse as that in the secondary rainbow

elect the correct answers and mark it according to the following codes:

Codes:

### Choices

Choice (4) Response

a.

1 and 2 are correct

b.

2 and 4 are correct

c.

1 and 3 are correct

d.

1,2 and 3 are correct

## Question number: 52

» Ray Optics » Mirror Formula

MCQ▾

### Question

There is a convex mirror of radius 50 cm. The image of a point at a distance 50 cm from the pole of mirror on its axis will be formed at:

### Choices

Choice (4) Response

a.

16.67 cm behind the mirror

b.

Infinity

c.

Pole

d.

Focus

## Question number: 53

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

MCQ▾

### Question

A convex lens of focal length 20 cm is placed in contact with a diverging lens of unknown focal length. The lens combination acts as a converging lens and has a focal length of 30 cm. What is the focal length of the diverging lens

### Choices

Choice (4) Response

a.

- 30 cm

b.

- 60 cm

c.

- 10 cm

d.

- 90 cm