Search SchoolNGR

Physics Past Questions and Answers

Jamb Physics Questions

Question 26:

The speed of light in air is 3 x 10⁸ms^-1. What is the speed in glass with a refractive index of 1.50?

SchoolNGR Classroom

A 1.5 x 10⁸ms^-1
B 3.0 x 10⁸ms^-1
C 2.0 x 10⁸ms^-1
D 6.0 x 10⁸ms^-1

View Answer & Explanation

Question 27:

If the refractive index of a medium in air is 2.0, what is the critical angle for this medium?

SchoolNGR Classroom

A 30^o
B 42^o
C 45^o
D 50^o

View Answer & Explanation

Question 28:

Which of the following arrangements of the components of electromagnetic spectrum is in ascending order of wavelengths?

SchoolNGR Classroom

A Gamma rays, ultraviolet rays, X- rays, infra - red rays
B Gamma rays, X-rays, ultraviolet rays, infra-red rays
C Infra-red rays, ultraviolet rays, X-rays, gamma rays
D Gamma rays, ultraviolet rays, infra-red rays, X-rays

View Answer & Explanation

Question 29:

The angle between the direction of the earth's magnetic field and the horizontal is called the

SchoolNGR Classroom

A Angle of deviation
B Magnetic declination
C Magnetic meridian
D Angle of dip

View Answer & Explanation

Question 30:

Calculate the force acting on an electron of charge 1.6 x 10^-19C placed in an electric field of intensity 10⁸Vm^-1

SchoolNGR Classroom

A 1.6 x 10^-11N
B 1.6 x 10^-14N
C 1.6 x 10^-16N
D 1.0 x 10^-16N

View Answer & Explanation

Stay Updated

Follow us on:

Subjects