NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1023 - 1027 of 2184

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Question number: 1023

» Electromagnetic Waves » Electromagnetic Waves & Characteristics

Edit
Assertion-Reason▾

Question

Assertion (Ꭺ)

The electromagnetic waves of shorter wavelength can travel longer distances on earth’s surface than those of longer wavelengths.

Reason (Ꭱ)

Shorter the wavelength, the larger is the velocity of wave propagation.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

Ꭺ is true but Ꭱ is false

c.

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

d.

Ꭺ is false but Ꭱ is true

Question number: 1024

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

Edit
MCQ▾

Question

What is the refractive index of material of a Plano-convex lens, if the radius of curvature of the convex surface is 10 cm and focal length of the lens is 30 cm?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1025

» Ray Optics » Magnification

Edit
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.

b.

c.

d.

Question number: 1026

» Electromagnetic Induction & Alternating Currents » Resonance

Edit
MCQ▾

Question

This circuit will resonate at ω equal to,

In given figure is LCR circuit diagram

In Given Figure is LCR Circuit Diagram

In figure inductor, capacitor and resistor connected in parallel with 200 V power supply.

Choices

Choice (4) Response

a.

200 rad s -1

b.

500 rad s -1

c.

50 rad s -1

d.

2000 rad s -1

Question number: 1027

» Electromagnetic Induction & Alternating Currents » Quality Factor

Edit
MCQ▾

Question

In an LCR circuit, the sharpness of resonance depends on

Choices

Choice (4) Response

a.

Resistance R

b.

Capacitance C

c.

Inductance L

d.

All a. , b. and c. are correct