NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1101 - 1106 of 2184

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Question number: 1101

» Ray Optics » Power of a Lens

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MCQ▾

Question

A slide projector lens has a focal length 10 cm. It throws an image of a 2cm × 2cm slide on a screen 5 m from the lens. Find the size of the picture on the screen

Choices

Choice (4) Response

a.

(88 × 88) cm 2

b.

(98 × 98) cm 2

c.

(78 × 78) cm 2

d.

(64 × 64) cm 2

Question number: 1102

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

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MCQ▾

Question

An image is formed on the screen by a convex lens. When upper half part of lens is covered with black paper, then:

Choices

Choice (4) Response

a.

Half image is formed

b.

Full image is formed

c.

Intensity of image will be enhanced

d.

All of the above

Question number: 1103

» Electromagnetic Induction & Alternating Currents » Resonance

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MCQ▾

Question

In the non-resonant circuit, what will be the nature of the circuit for frequencies higher than the resonant frequency?

Choices

Choice (4) Response

a.

Inductive

b.

Capacitive

c.

Resistive

d.

All of the above

Question number: 1104

» Ray Optics » Power of a Lens

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MCQ▾

Question

If the focal length of a magnifier is 5 cm calculate the power of the lens.

Choices

Choice (4) Response

a.

10 D

b.

5 D

c.

20 D

d.

15 D

Question number: 1105

» Ray Optics » Magnification

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MCQ▾

Question

A 0.5 cm high object is placed at 30 cm from a convex mirror whose focal length is 20 cm. Find the position and size of the image.

Choices

Choice (4) Response

a.

5 cm, 0.1 cm

b.

6 cm, 0.5 cm

c.

18 cm, 0.2 cm

d.

12 cm, 0.2 cm

Question number: 1106

» Ray Optics » Resolving Power of Microscopes and Astronomical Telescopes

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MCQ▾

Question

An astronomical telescope has an angular magnification of magnitude 5 for distant objects. The separation between the objective and eye-piece is 36 cm and the final image is formed at infinity.

(1) The focal length of objective is 30 cm

(2) The focal length of objective is 25 cm

(3) The focal length of eye piece is 6 cm

(4) The focal length of eye piece is 12 cm

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

Codes:

Choices

Choice (4) Response

a.

2 and 4 are correct

b.

1 and 3 are correct

c.

1 and 2 are correct

d.

1,2 and 3 are correct