MCQ
Two pendulums begin to swing simultaneously. The first pendulum makes nine full oscillations when the other makes seven. The ratio of the lengths of the two pendulums is ______.
- A$\frac{7}{9}$
- B$\frac{8}{9}$
- C$\frac{64}{81}$
- ✓$\frac{49}{81}$
✓
Answer
Correct option: D.
$\frac{49}{81}$
D
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A particle is performing $ \text{U.C.M.}$ along the circumference of a circle of diameter $50 \ cm$ with frequency $2 \ Hz.$ The acceleration of the particle in $m/s^2$ is $........$
→Which among the following compounds in crystalline form is used for making Nicol's prism?
Identify compound 'A' in the following reaction.
The area $($in sq. units$)$ enclosed between the curves $y = x^2$ and $y = |x|$ is $.......$
→Homo habilis is also referred to as ____________.
Which is the last stabilised community in a plant succession?
Identify the criterion for movement of DNA fragments on agarose gel during gel electrophoresis.
The equation of a plane progressive wave is y = 0.09sin8 `pi` `["t" - "x"/20]`.When it is reflected at a rigid support, its amplitude becomes `2/3`rd of its 3 previous value. The equation of the reflected wave is ______.
Select the WRONG statement:
IUPAC name of
