12cm
24cm
48cm
108cm
Correct answer is B
F = \(\frac{uv}{u + v}\)
v = 3u
18 = \(\frac{3u \times u}{3u + u}\)
u = 24cm
When an object is placed very close to the pole of a concave mirror, the virtual image obtained is
diminished and upright
diminished and inverted
enlarged and inverted
enlarged and upright
Correct answer is D
No explanation has been provided for this answer.
i, ii, and iv
i, ii, iii
ii and iii
i and iii
Correct answer is C
No explanation has been provided for this answer.
80Hz
600Hz
800Hz
1600Hz
Correct answer is C
No of holes x Revolution
F = NH x NR
= 32 x 25
= 800Hz
A note is the octave of another note if it has
a frequency twice that of the first note
frequency half that of the first note
the same fundamental frequency as the first one
a frequency frequency eight times that of the first note
Correct answer is A
No explanation has been provided for this answer.