NEET Physics: Questions 1011 - 1014 of 2142

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Question number: 1011

» Ray Optics » Magnification

MCQ▾

Question

The relation between the linear magnification m, the object distance u and the focal length f for a spherical mirror is

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 1012

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

MCQ▾

Question

A plane mirror reflecting a ray of incident light is rotated through an angle θ about an axis through the point of incidence in the plane of the mirror perpendicular to the plane of incidence, then

(1) The reflected ray rotates through an angle 2θ

(2) The incident ray is fixed

(3) The reflected ray does not rotate

(4) The reflected ray rotates through an angle 0

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

Question number: 1013

» Electromagnetic Induction & Alternating Currents » Alternating Currents

Assertion-Reason▾

Assertion (Ꭺ)

An alternating current is more dangerous than the direct steady current.

Reason (Ꭱ)

The frequency of the alternating current is injurious the human body.

Choices

Choice (4) Response

a.

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

b.

Ꭺ is true but Ꭱ is false

c.

Both Ꭺ and Ꭱ are false

d.

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

Question number: 1014

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

MCQ▾

Question

A completely transparent material will be invisible in vacuum if its refractive index is,

Choices

Choice (4) Response

a.

Unity

b.

Equal to1.33

c.

Greater than unity

d.

Less than unity

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