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.
i and ii only
ii and iii only
iv only
i, ii and iv only
Correct answer is C
No explanation has been provided for this answer.
The sound heard by a person after the reflection of the sound generated by him is called
reverberation
resonance
echo
audibility
Correct answer is C
No explanation has been provided for this answer.
A telescope is said to be in normal adjustment when the
focal length of he objective is greater than that of the eyepiece
focal length of the eyepiece is greater than that of the objective
focal length of the eyepiece is equal to that of the objective
objective focal point coincides with that of the eyepiece
Correct answer is D
No explanation has been provided for this answer.
3.0
1.5
0.6
0.3
Correct answer is C
* produces a virtual image when object distance(u) is less than its focal length(f).
\(\frac{1}{f} = \frac{1}{u} - \frac{1}{v}\)
\(\frac{1}{v} = \frac{1}{f} + \frac{1}{u}\)
\(\frac{1}{15} + \frac{1}{10} = \frac{2 + 3}{30}\)
\(\frac{1}{v} = \frac{5}{30}\)
v = 6.0 cm
but m = \(\frac{v}{u} = \frac{6}{10} = 0.6\)
Note that the negative sign only shows the placement of the image. It has no effect on the magnification basically.
F and X
X and C
C and F
F and 2F
Correct answer is B
No explanation has been provided for this answer.