Physics Questions and Answers
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
Short sightedness can be corrected by what type of lens?
Concave lens
Convex lens
Converging lens
Mirrors
Correct answer is A
Shortsightedness is corrected using a concave (curved inwards) lens which is placed in front of a myopic eye
In the microscope, the eyepiece lens merely acts as?
an inverter
a refiner
a diminisher
a magnifier
Correct answer is D
The basic function of microscope is magnification
An object placed at the bottom of a well full of clear water appears closer to the surface due to?
diffraction
reflection
refraction
polarization
Correct answer is C
Real depth and apparent dept is due to refraction
Convex mirror are used as driving mirrors because images formed are?
erect, virtual and diminished
erect, real and diminished
erect, virtual and magnified
inverted virtual and diminished
Correct answer is A
Image formed by convex mirror is always erect, virtual and diminished
20 cm
15 cm
10 cm
5 cm
Correct answer is D
(1)/V + (1)/U = (1)/f
(1)/V + (1)/20 = (1)/10
(1)/V = (1)/10 - (1)/20 = (2 -1)/20 = (1)/20
∴ V = 20 cm
mag = (image height)/object height = (v)/u
(X)/5 = (20)/50
X = 5 cm