Search SchoolNGR

Saturday, 02 May 2026
Register . Login

Physics Past Questions and Answers

Jamb Physics Questions

Question 366:
A 45o triangular glass prism can be used as a reflector of light because
  • A A refraction never takes place in such a prism
  • B The angle of reflection equals the angle of incidence
  • C The refractive index of glass is less than 1
  • D It is transparent
  • E The critival angle angle for glass is less than 45<sup style='font-size: smaller;'>o</sup>
View Answer & Explanation
Question 367:
A convex mirror is used as a driving mirror because i. its image is erect. ii. it has a large field of view. iii. it has a long focal length. Identify the CORRECT statement(s)
  • A I andiii only
  • B I and ii only
  • C Ii and iii only
  • D I, ii, and iii only
  • E I only
View Answer & Explanation
Question 368:
Two rays of light from a point below the surface of water are equally inclined to each other at 60o in water. What is the angle between the rays when they emerge into air? (Take the refractive index of water to be \(\frac{4}{3}\))
  • A 41.8<sup style='font-size: smaller;'>o</sup>
  • B 44.1<sup style='font-size: smaller;'>o</sup>
  • C 60.0<sup style='font-size: smaller;'>o</sup>
  • D 83.6<sup style='font-size: smaller;'>o</sup>
  • E 120.0<sup style='font-size: smaller;'>o</sup>
View Answer & Explanation
Question 369:
A narrow beam of white light can be split up into different colours by a glass prism. The correct explanation is that
  • A White light is an electromagnetic wave
  • B The prism has all the colours of the white light
  • C White light has undergone total internal reflection in the prism
  • D Different colours of white light travel with different speeds in glass
  • E White ligth consist of yellow, green and red colours
View Answer & Explanation
Question 370:
A charge of one coulomb liberates 0.0033g of copper in an electrolytic process. How long will it take a current of 2A to librate 1.98g of copper in such a process?
  • A 5 mins
  • B 30 mins
  • C 50 mins
  • D 60 mins
  • E 120 mins
View Answer & Explanation