NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 972 - 976 of 2320

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Passage

Read the passage given below and answer the questions that follow:

In both mirror - at 20 cm distance from mirror M1

In Both Mirror - at 20 Cm Distance from Mirror M1

A plane mirror (M 1) and a concave mirror (M 2) of focal length 10 cm are arranged as shown in figure. An object is kept at origin. Answer the following questions. (Consider image formed by single reflection in all cases)

Question number: 972 (1 of 2 Based on Passage) Show Passage

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

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MCQ▾

Question

The co-ordinates of image formed by concave mirror are

Choices

Choice (4)Response

a.

(10 cm, -40 cm)

b.

(10 cm, 8 cm)

c.

(10 cm, - 60 cm)

d.

None of the above

Question number: 973 (2 of 2 Based on Passage) Show Passage

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

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MCQ▾

Question

The co-ordinates of image formed by plane mirror are

Choices

Choice (4)Response

a.

(-20 cm, 0)

b.

(10 cm, - 60 cm)

c.

(10 cm, -10 cm)

d.

(10 cm, 10 cm)

Question number: 974

» Electromagnetic Waves » Electromagnetic Spectrum » Radio Waves

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Assertion-Reason▾

Question

Assertion (Ꭺ)

Radio waves can be polarized.

Reason (Ꭱ)

Sound waves in air are longitudinal in nature.

Choices

Choice (4)Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is true but Ꭱ is false

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

Question number: 975

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

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MCQ▾

Question

The focal length of the lens of the human eye is maximum when it is looking at an object at,

Choices

Choice (4)Response

a.

Infinity

b.

25 cm from the eye

c.

Very near the eye.

d.

100 cm from the eye

Passage

Read the passage given below and answer the questions that follow:

A student constructs a series RLC circuit. While operating the circuit at a frequency f she uses an AC voltmeter and measures the potential difference across each device as (∆V R) = 8.8 V, (∆V L) = 2.6V and (∆V C) = 7.4V.

Question number: 976 (1 of 3 Based on Passage) Show Passage

» Electromagnetic Induction & Alternating Currents » LCR Series Circuit

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MCQ▾

Question

What will happen to the value of ( ∆V L ) if the frequency is adjusted to increase the current through the circuit?

Choices

Choice (4)Response

a.

(∆V L) will decrease.

b.

(∆V L) will increase.

c.

(∆V L) will remain the same regardless of any changes to f.

d.

There is not enough information to answer the question.

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