Question
A pendulum clock that keeps correct time on the earth is taken to the moon it will run (it is given that $g_{Moon} = g_{Earth}/6$ )
✓
Answer
(d) $T = 2\pi \sqrt {\frac{l}{g}} $==>$\frac{{{T_e}}}{{{T_m}}} = \sqrt {\frac{{{g_m}}}{{{g_e}}}} = \sqrt {\frac{{{g_e}/6}}{{{g_e}}}} = \frac{1}{{\sqrt 6 }}$
$ \Rightarrow $ ${T_m} = \sqrt 6 {T_e}$ i.e. clock becomes slower.
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
Relative permeability of iron is $5500,$ then its magnetic susceptibility will be
→If an object is placed $10cm$ infront of a concave mirror of focal length $20cm,$ the image will be
→A heavy mass is attached to a thin wire and is whirled in a vertical circle. The wire is most likely to break
A tuning fork of frequency $392 Hz,$ resonates with $50 cm $ length of a string under tension ($T$). If length of the string is decreased by $2\%$, keeping the tension constant, the number of beats heard when the string and the tuning fork made to vibrate simultaneously is
→Two small conducting spheres of equal radius have charges $ + 10\,\mu C$ and $ - 20\,\mu C$ respectively and placed at a distance $R$ from each other experience force ${F_1}$. If they are brought in contact and separated to the same distance, they experience force ${F_2}$. The ratio of ${F_1}$ to ${F_2}$ is
→Assertion : The resolving power of a telescope is more if the diameter of the objective lens is more.
Reason : Objective lens of large diameter collects more light.
Three lenses $L_1, L_2, L_3$ are placed co-axially as shown in figure. Focal length's of lenses are given $30\, cm, 10\, cm$ and $5\, cm$ respectively. If a parallel beam of light falling on lens $L_1$, emerging $L_3$ as a convergent beam such that it converges at the focus of $L_3$. Distance between $L_1$ and $L_2$ will be......$cm$
→A motor cycle starts from rest and accelerates along a straight path at $2 \;m / s ^{2}$. At the starting point of the motor cycle there is a stationary electric siren. How far has the motor cycle gone when the driver hears the frequency of the siren at $94 \%$ of its value when the motor cycle was at rest?
→(Speed of sound $=330 ms ^{-1}$)
If in a $p-n$ junction diode, a square input signal of $10\, V$ is applied as shown. Then the output signal across $R_L$ will be
→A vessel of volume $8\, litre$ contains an ideal gas at $300\, K$ and $2\, atm$ pressure. The gas is allowed to leak till pressure become $125\, kpa$ calculate amount of moles which leak out if temperature remain constant ...... $moles$
→