PDF chapter test TRY NOW
Read the assertion and reason carefully, and select the right answer:
1. Assertion (A) : Generally, lightning is seen earlier, and thunder is heard later.
Reason (R) : Speed of the light is more than the speed of sound.
Reason (R) : Speed of the light is more than the speed of sound.
2. Assertion (A) : Sound travels faster in gases than in solids.
Reason (R) : Solid posses a greater density than that of gases.
Reason (R) : Solid posses a greater density than that of gases.