Teacha
  • Courses
  • Mock Exams
  • For Tutors
  • For Schools
  • Pricing
Log InStart Free
  1. Past Questions
  2. /
  3. UI
  4. /
  5. Physics
  6. /
  7. 2020/2021
  8. /
  9. Q5
Question 5

The earth retains its atmosphere because?

  • A.the earth is spherical
  • B.the velocity of escape is greater than the mean speed of molecules.
  • C.the constant of gravitation is a universal constant.
  • D.The velocity of escape is less than the mean speed of molecules.
Objective

Question details

Exam body
UI
Subject
Physics
Year
2020/2021
Question no.
#5
Type
Objective
Previous · Q4A flat plate is cut in the shape of a square of side 20.0 cm with an equilateral… Next · Q6 The principle of operation of an induction coil is based on __.

More from this paper

  • Q1A slight loading of a tuning fork has the effect of:
  • Q2The fundamental frequency of a plucked wire under a tension of 400 N is 250 Hz…
  • Q3Which of the following is true of light and sound waves?
  • Q7A concave lens of focal length 20cm forms an image 1/2 the size of the object…
  • Q8Isotopes of an element contains __.
  • Q9A convex lens of focal length 10.0cm is used to form a real image which is half…
See all Physics 2020/2021 questions
Teacha

Africa's learning & exam readiness platform. Built for students, tutors, and schools.

Platform

  • Courses
  • Mock Exams
  • Past Questions

For You

  • I'm a Tutor
  • I'm a School
  • Pricing

© 2025 Teacha. Built for African learners, tutors, and schools. Teacha is not affiliated with WAEC, NECO, or JAMB. All past questions are sourced from publicly available materials.

Privacy PolicyTerms of UseCookie Policy