NEET Physics: Questions 1118 - 1122 of 2098

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2098 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

Question number: 1118

» Electromagnetic Waves » Electromagnetic Waves & Characteristics

MCQ▾

Question

Light is an electromagnetic wave. Its speed in vacuum is given by the expression,

Choices

Choice (4) Response

a.

μ0ε0

b.

ε0μ0

c.

μ0ε0

d.

1μ0ε0

Question number: 1119

» Wave Optics » Diffraction Due to a Single Slit Width of Central Maximum

Assertion-Reason▾

Assertion (Ꭺ)

If a plane glass slab is placed on the letters of different colors all the letters appear to be raised up to the same height.

Reason (Ꭱ)

Different colors have different wavelengths.

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.

Ꭺ is true but Ꭱ is false

d.

Both Ꭺ and Ꭱ are false

Question number: 1120

» Ray Optics » Power of a Lens

MCQ▾

Question

If the focal length of a magnifier is 5 cm find the magnifying power of the lens for relaxed and strained eye.

Choices

Choice (4) Response

a.

2×, 3×

b.

4×, 5×

c.

l×, 2×

d.

4×, 2×

Question number: 1121

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

MCQ▾

Question

A pin is placed 10 cm in front of a convex lens of focal length 20 cm, made of material having refractive index 1.5. The surface of the lens farther away from the pin is silvered and has a radius of curvature 22 cm. determine the position of the final image.

Choices

Choice (4) Response

a.

31 cm in front

b.

11 cm in front

c.

15 cm in front

d.

21 cm in front

Question number: 1122

» Electromagnetic Induction & Alternating Currents » LCR Series Circuit

MCQ▾

Question

For a series LCR circuit R = X L = 2X C. The impedance of the circuit and phase difference between V and I respectively will be

Choices

Choice (4) Response

a.

5R,tan1(12)

b.

5XC,tan1(2)

c.

5R2,tan1(12)

d.

5R2,tan1(2)

Sign In