Match List - I with List - II. List-I List-II (a) Source of microwave frequency (i) Radioactive decay of nucleus (b) Source of infrared frequency (ii) Magnetron (c) Source of Gamma Rays (iii) Inner shell electrons (d) Source of X -rays (iv) Vibration of atoms and molecules (v) LASER (vi) RC circuit Choose the correct answer from the options given below:

(a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)

(a)-(ii), (b)-(iv), (c)-(vi), (d)-(iii)

(a)-(vi), (b)-(iv), (c)-(i), (d)-(v)

(a)-(vi), (b)-(v), (c)-(i), (d)-(iv)

MEDIUM

Earn 100

Which Indian organization is responsible for satellite communications?

50% studentsanswered this correctly

Important Questions on Electromagnetic Waves

HARD

Physics>Modern Physics>Electromagnetic Waves>Sources of Electromagnetic Waves

Question Image

Write a possible RNA strand that can be transcribed from the above DNA molecule formed.

EASY

Physics>Modern Physics>Electromagnetic Waves>Sources of Electromagnetic Waves

Which of the following statements is correct?

a. rRNA is the most abundant RNA.
b. Ribosomes are composed of approximately 80% rRNA and 20% ribosomal proteins.
c. rRNA is a type of coding RNA.

HARD

Physics>Modern Physics>Electromagnetic Waves>Sources of Electromagnetic Waves

Which one of the following is wrongly matched?

MEDIUM

Physics>Modern Physics>Electromagnetic Waves>Sources of Electromagnetic Waves

Expressed sequence tags (ESTs) refers to:

EASY

Physics>Modern Physics>Electromagnetic Waves>Sources of Electromagnetic Waves

Long distance short- wave radio broadcasting uses

EASY

Physics>Modern Physics>Electromagnetic Waves>Sources of Electromagnetic Waves

What is transcription?

EASY

Physics>Modern Physics>Electromagnetic Waves>Sources of Electromagnetic Waves

Spliceosomes are not found in cells of:

MEDIUM

Physics>Modern Physics>Electromagnetic Waves>Sources of Electromagnetic Waves

Write polarity of template strand and coding strand. Write three regions of transcription unit of DNA.

EASY

Physics>Modern Physics>Electromagnetic Waves>Sources of Electromagnetic Waves

Equation for wave vector is:

EASY

Physics>Modern Physics>Electromagnetic Waves>Sources of Electromagnetic Waves

A donor impurity results in

EASY

Physics>Modern Physics>Electromagnetic Waves>Sources of Electromagnetic Waves

Due to Doppler's effect the shift in wavelength observed is

0.1 Å

for a star producing wavelength

6000 Å

. Velocity of recession of the star will be

EASY

Physics>Modern Physics>Electromagnetic Waves>Sources of Electromagnetic Waves

Match List - I with List - II.

List-I		List-II
(a)	Source of microwave frequency	(i)	Radioactive decay of nucleus
(b)	Source of infrared frequency	(ii)	Magnetron
(c)	Source of Gamma Rays	(iii)	Inner shell electrons
(d)	Source of $X$ -rays	(iv)	Vibration of atoms and molecules
		(v)	LASER
		(vi)	RC circuit