Ask a Question

A photographic plate placed at a distance of 5 cm from a weak point source is exposed for 3 s.

← Prev Question Next Question →
0 votes
14 views
asked Mar 29, 2018 in Physics by shabnam praween (19,050 points) ● 5 ● 6 ● 8

A photographic plate placed at a distance of 5 cm from a weak point source is exposed for 3 s. If the plate is kept at a distance of 10 cm from the source, the time needed for the same exposure is

(a) 3 s

(b) 12 s

(c) 24 s

(d) 48 s.

1 Answer

0 votes
answered Mar 29, 2018 by santoshjha (25,550 points) ● 4 ● 5 ● 6
selected Mar 30, 2018 by Vikash Kumar
 
Best answer
The correct answer is
(b) 12 s
← Prev Question Next Question →

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.

One Thought Forever

“There is a close connection between getting up in the world and getting up in the morning.“
– Anon
~~~*****~~~

Related questions

© 2017 Sarthaks eConnect
Managed by Sarthaks Digitizing India
...