1993 - JAMB Physics Past Questions and Answers - page 3
A beam of light is incident from air to water at an angle of 30oC. Find the angle of refraction if the refractive index of water is (\frac{4}{3})
The property of the eye known as its power of accommodation is controlled by the
Which of the following correctly explain(s) why a green leaf appears green in bright day light? i. it absorbs only the green component of sunlight. ii. it absorbs all colour of sunlight except green. iii. it reflects only the green component of sunlight.
Which of the following correctly explains why soft iron is proffered to steel in electromagnets? i. soft iron is more readily magnetized than steel. ii. soft iron is more readily demagnetized than steel. iii. soft iron retains magnetism more than steel.
A current carrying conductor experiences a force when placed in a magnetic field because the
A simple cell with mercury-amalgamated zinc electrode prevents
The terminal voltage of a battery is 4.0V when supplying a current of 2.0A, and 2.0V when supplying a current of 3.0A. The internal resistance of the battery is
A current of 100mA passes through a conductor for 2 minutes. The quantity of electricity transported is
A parallel plate capacitor of area 10cm2 in vacuum has a capacitance of 10-2(\mu)F. What is the distance between the plates?(e = 9 x 10-12fm)
A 40-W instrument has a resistance of 90(\Omega). On what voltage should it be operated normally?