Physics Past Questions and Answers

A stone of mass 0.7 kg is projected vertically upward with a speed of 5 ms-1. Calculate the maximum height reached. [g =10ms^-2]

A 1.25m
B 1.50m
C 2.50m
D 3.75m
E 5.00Nm

Question 262:

Calculate the magnitude of the force due to a magnetic field of 0.40T on an electron moving perpendicular to the field with a speed of 4.00 × 106ms^-1 (e 1.60 × 10^-19C]

A 6.40 × ^-10
B 6.40× 10^-13N
C 2.56 × 10^-13N
D 1.60 × 10^-12N
E 2.30 × 10^-11N

Question 263:

A voltage of 240V is connected to the primary coil of a the rating of the primary turns to the secondary turns if the voltage available at the secondary coil is 15V

A 0.06
B 0.9
C 1.6
D 16
E 36

Question 264:

Two metals A and B lose the same quantity of heat when their temperatures drop from 20°C to 15°C. If the specific heat Capacity of A Ii thrice that of B, calculate the ratio of the mass of A to that of B.

A 3:01
B 4:03
C 3:04
D 1:02
E 1:03

Question 265:

When a yellow card is viewed in blue light, It will appear

A Black
B Orange
C Purple
D Red
E White