A radiowave has a maximum magnetic field induction of 10-4 T on arrival at a receiving antenna. The maximum electric field intensity of such a wave is

(1) zero

(2) 3×104 V/m

(3) 5.8×10-9 V/m

(4) 3.3×1013  V/m

Subtopic:  Properties of EM Waves |
 82%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A capacitor is having a capacity of 2 pF. The electric potential across the capacitor is changing with a value of \(10^{12}~\mathrm{V/s}\). The displacement current is:

1. 2 A 2. 3 A
3. 6 A 4. 9 A
Subtopic:  Displacement Current |
 90%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The shortest wavelength is for 

(1) γ-rays

(2) X-rays

(3) ultraviolet rays

(4) microwaves

Subtopic:  Electromagnetic Spectrum |
 83%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

An accelerated charge :

(1) emits an electromagnetic wave

(2) does not emit electromagnetic wave

(3) produces a gravitational field

(4) None of these

Subtopic:  Generation of EM Waves |
 94%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The electromagnetic radiations are in descending order of wavelength in the following sequences :

(1) infra-red waves, radio waves, X-rays, visible light rays

(2) Radio-waves, infra-red waves, visible light rays, X-rays

(3) Radio waves, visible light rays, infra-red waves, X-rays

(4) X-rays, visible light rays, infra-red wave, radio-waves

Subtopic:  Electromagnetic Spectrum |
 81%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

X-rays and γ-rays are both electromagnetic waves, which one of the following statements is true?

(1) in general, X-rays have a larger wavelength than that of γ-rays

(2) X-rays have a smaller wavelength than that of γ-rays

(3) γ-rays have smaller frequency than that of X-rays

(4) wavelength and frequency of X-rays are both larger than those of γ-rays.

Subtopic:  Properties of EM Waves |
 85%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following are not electromagnetic waves?

(1) cosmic rays

(2) gamma rays

(3) microwaves

(4) X-rays

Subtopic:  Electromagnetic Spectrum |
 52%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The frequencies of X-rays, γ-rays and ultraviolet rays are respectively a, b and c. Then :

(1) a < b, b < c

(2) a > b, b > c

(3) a > b, b > a

(4) a < b, b > c

Subtopic:  Properties of EM Waves |
 79%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A plane electromagnetic wave of frequency 40 MHz travels in free space in the x-direction. At some point and at some instant, the electric field E has its maximum value of 750 N/C in y-direction. The wavelength of the wave is

(1) 3.5 m

(2) 5.5 m

(3) 7.5 m

(4) 9.5 m

Subtopic:  Properties of EM Waves |
 80%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The waves used in telecommunication are

(1) infrared

(2) visible light

(3) microwaves

(4) ultraviolet rays

Subtopic:  Properties of EM Waves |
 69%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh