Use app×
Ask a Question
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE

Monochromatic source, of power 4 kW and 100% efficiency produces

← Prev Question Next Question →
0 votes
70 views
in Physics by (52.2k points)
closed by

Monochromatic source, of power 4 kW and 100% efficiency produces 1020 photons every second. The radiations emitted by it belong to the part of the EM spectrum called

(1) gamma rays

(2) x–rays

(3) microwaves

(4) infrared waves

Play Quiz Game >

1 Answer

+1 vote
by (51.8k points)
selected by
 
Best answer

(2) x–rays

Power P = 4000, W = 4000 J per second. 

n = 1020 per second

∴ n(hv) = p  (∵ efficiency is 100%)

This is in the range of frequencies for x–rays.

← Prev Question Next Question →

Find MCQs & Mock Test

  1. JEE Main 2025 Test Series
  2. NEET Test Series
  3. Class 12 Chapterwise MCQ Test
  4. Class 11 Chapterwise Practice Test
  5. Class 10 Chapterwise MCQ Test
  6. Class 9 Chapterwise MCQ Test
  7. Class 8 Chapterwise MCQ Test
  8. Class 7 Chapterwise MCQ Test

Related questions

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

User Contribution to Sarthaks eConnect
Managed by Sarthaks Digitizing India
...