NEET Physics: Questions 1043 - 1046 of 2098

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Question number: 1043

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

Assertion-Reason▾

Assertion (Ꭺ)

The size of the mirror doesn’t affect the nature of the image.

Reason (Ꭱ)

Small mirror always forms a virtual image.

Choices

Choice (4) Response

a.

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

b.

Ꭺ is false but Ꭱ is true

c.

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

d.

Ꭺ is true but Ꭱ is false

Question number: 1044

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

Assertion-Reason▾

Assertion (Ꭺ)

A double convex lens (µl=1.5) has focal length 10 cm. When the lens is immersed in water (µm=43) its focal length becomes 40 cm.

Reason (Ꭱ)

1f=μlμmμm(1R11R2)

Choices

Choice (4) Response

a.

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

b.

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

c.

Ꭺ is false but Ꭱ is true

d.

Both Ꭺ and Ꭱ are false

Question number: 1045

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

MCQ▾

Question

A convex lens is made out of a substance of 1.2 refractive index. The two surfaces of lens are convex. If this lens is placed in water whose refractive index is 1.33 it will behave as:

Choices

Choice (4) Response

a.

Plane glass plate

b.

like a prism

c.

Convergent lens

d.

divergent lens

Question number: 1046

» Electromagnetic Induction & Alternating Currents » LCR Series Circuit

MCQ▾

Question

An ac source is connected to a resistive circuits. Which of the following statements are false?

(1) Current leads-the voltage

(2) Current lags behind the voltage

(3) Any of (1) or (2) may be true depending upon the value of resistance

(4) Current and voltage are in same phase

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, 2 and 3 are correct

d.

1 and 2 are correct

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