NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 1099 - 1104 of 2142

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Question number: 1099

» Electromagnetic Induction & Alternating Currents » LCR Series Circuit

MCQ▾

Question

In a series LCR circuit capacitance is changed from C to 2C. For the resonant frequency to remain unchanged, the inductance would be changed from L to

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

2 L

d.

4 L

Question number: 1100

» Ray Optics » Power of a Lens

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.

(78 × 78) cm 2

b.

(64 × 64) cm 2

c.

(88 × 88) cm 2

d.

(98 × 98) cm 2

Question number: 1101

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

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.

Intensity of image will be enhanced

c.

Full image is formed

d.

None of the above

Question number: 1102

» Electromagnetic Induction & Alternating Currents » Resonance

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.

Resistive

b.

Capacitive

c.

Inductive

d.

All of the above

Question number: 1103

» Ray Optics » Power of a Lens

MCQ▾

Question

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

Choices

Choice (4) Response

a.

15 D

b.

20 D

c.

10 D

d.

5 D

Question number: 1104

» Ray Optics » Magnification

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.

6 cm, 0.5 cm

b.

12 cm, 0.2 cm

c.

5 cm, 0.1 cm

d.

18 cm, 0.2 cm

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