NEET Physics: Questions 1105 - 1109 of 2142

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2142 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: 1105

» Ray Optics » Resolving Power of Microscopes and Astronomical Telescopes

MCQ▾

Question

An astronomical telescope has an angular magnification of magnitude 5 for distant objects. The separation between the objective and eye-piece is 36 cm and the final image is formed at infinity.

(1) The focal length of objective is 30 cm

(2) The focal length of objective is 25 cm

(3) The focal length of eye piece is 6 cm

(4) The focal length of eye piece is 12 cm

Select the correct answers and mark it according to the following codes:

Codes:

Choices

Choice (4) Response

a.

1, 2 and 3 are correct

b.

1 and 3 are correct

c.

1 and 2 are correct

d.

2 and 4 are correct

Question number: 1106

» Wave Optics » Interference

MCQ▾

Question

The intensity ratio of two waves is 9: 1. These waves produce the event of interference. The ratio of maximum to minimum intensity will be

Choices

Choice (4) Response

a.

1: 4

b.

1: 9

c.

9: 1

d.

4: 1

Question number: 1107

» Electromagnetic Waves » Electromagnetic Waves & Characteristics

MCQ▾

Question

A magnetic field of a plane electromagnetic wave is given by B = 2x10 7 sin (0.5x10 3 x + 1.5x10 11 t) T. Frequency of the wave is,

Choices

Choice (4) Response

a.

33.9 GHz

b.

13.9 GHz

c.

23.9 GHz

d.

12.9 GHz

Question number: 1108

» Electromagnetic Waves » Electromagnetic Spectrum » Gamma Rays

MCQ▾

Question

Which of the following radiations has the least wavelength?

Choices

Choice (4) Response

a.

β - rays

b.

X - rays

c.

γ - rays

d.

α - rays

Question number: 1109

» Ray Optics » Resolving Power of Microscopes and Astronomical Telescopes

MCQ▾

Question

At normal levels of intensities, the eye is most sensitive to

Choices

Choice (4) Response

a.

Blue light

b.

Yellow light

c.

Red green light

d.

Red light

f Page
Sign In