Glass Prism - Jamb Physics Past Questions and Answers

Question 1:

• JAMB 2019

If the time of flight is 96seconds, calculate the horizontal range through the point of projection.

A. 84400m
B. 69000m
C. 61440m
D. 24000m

Question 2:

• JAMB 1985

A 45^o 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^o

Question 3:

• JAMB 1987

A ray of light is incident at an angle of 30^o on one top surface of a parallel-sided glass block of refractive index 1.5. The ray finally emerges from the lower surface. What is the angular deviation of the emergent ray?

A. 60^o
B. 39^o
C. 28^o
D. 0^o

Question 4:

• JAMB 2002

Calculate the refractive index of the material for the glass prism in the diagram above

A. ^√2/₂
B. ⁴/₃
C. √2
D. ³/₂

Question 5:

• JAMB 2003

A ray incident on a glass prism undergoes minimum deviation when the

A. Incident angle is equal to the angle of refraction
B. Refraction angle equals 90^o
C. Incident angle equals 90^o
D. Incident angle is equal to the angle of emergence