A big explosion on the moon cannot be heard on the earth because - Vidyadip

MCQ

A big explosion on the moon cannot be heard on the earth because

A
The explosion produces high frequency sound waves which are inaudible
✓
Sound waves required a material medium for propagation
C
Sound waves are absorbed in the moon's atmosphere
D
Sound waves are absorbed in the earth's atmosphere

✓

Answer

Correct option: B.

Sound waves required a material medium for propagation

b
Sound travels through the vibration of atoms and molecules in a medium (such as air or water). In space, where there is no air, sound has no way to travel. Hence, big explosion on the moon cannot be heard on the earth.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

In a photoelectric experiment a parallel beam of monochromatic light with power of $200 W$ is incident on a perfectly absorbing cathode of work function $6.25 eV$. The frequency of light is just above the threshold frequency so that the photoelectrons are emitted with negligible kinetic energy. Assume that the photoelectron emission efficiency is $100 \%$. A potential difference of $500 V$ is applied between the cathode and the anode. All the emitted electrons are incident normally on the anode and are absorbed. The anode experiences a force $F = n \times 10^{-4} N$ due to the impact of the electrons. The value of $n$ is. . . . .

Mass of the electron $m _{ c }=9 \times 10^{-31} kg$ and $1.0 eV =1.6 \times 10^{-19} J$.

A hole in a $P-$ type semiconductor is

The wavelength of light visible to eye is of the order of

For a gas the difference between the two specific heats is $4150\, J/kg\, K.$ What is the specific heats at constant volume of gas if the ratio of specific heat is $1.4$

For the stationary wave $y = 4\sin \,\left( {\frac{{\pi x}}{{15}}} \right)\cos (96\,\pi t)$, the distance between a node and the next antinode is

In figure shown, both blocks are released from rest. Find the time to cross each other ? ......... $\sec$

A body cools in $7$ minutes from $60^{\circ}\,C$ to $40^{\circ}\,C$. The temperature of the surrounding is $10^{\circ}\,C$. The temperature of the body after the next $7$ minutes will be

$n$ identical cells each of $e.m.f.$ $E$ and internal resistance $r$ are connected in series. An external resistance $R$ is connected in series to this combination. The current through $R$ is

A thin uniform rod of length $l$ and mass $m$ is swinging freely about a horizontal axis passing through its end. Its maximum angular speed is $\omega $. Its centre of mass rises to a maximum height of

If two moles of diatomic gas and one mole of mono atomic gas are mixed then the ratio of specific heats $\gamma=$ ......