Physics Past Questions and Answers

Which of the following consists entirely of vector quantities?

A Velocity, magnetic fulx and reaction
B Tension, magnetic flux and mass
C Displacement, impulse and power
D Work, pressure and moment

Question 82:

Ice cubes are added to a glass of warm water. The glass and water are cooled by

A Conduction only
B Convection only
C Conduction and convection
D Convection and radiation

Question 83:

A ray of light strikes a plane mirror at an angle of incidence of 35°. If the mirror is rotated through 10°, through what angle is the reflected ray rotated?

A 70Â°
B 45°
C 25Â°
D 20Â°

Question 84:

The terrestrial telescope has one extra lens more than the astronomical telescope. The extra lens is for

A Improving the sharpness
B Creating an inverted image
C Magnification of the image
D Erection of the image

Question 85:

The driving mirror of a car has a radius of curvature of 1m. A vehicle behind the car is 4m from the mirror. Find the image distance behind the mirror.

A 8/7
B 4/9
C 9/2
D 4/7