The mouth piece of a telephone handset converts
electrical energy to sound energy
sound energy to electrical energy
sound energy to radiowave
radiowave to sound energy
Correct answer is B
No explanation has been provided for this answer.
Resonance occurs when one vibrating object causes a second object to vibrate at its own natural
amplitude
speed
frequency
intensity
Correct answer is C
No explanation has been provided for this answer.
When a body is thrown vertically upwards, its velocity at the maximum height is
maximum
zero
double its initial value
half its initial value
Correct answer is B
No explanation has been provided for this answer.
increasing the reaction on the ground
increasing the pressure on the ground
decreasing the pressure on the ground
decreasing the weight on the ground
Correct answer is C
No explanation has been provided for this answer.
60g
80g
120g
200g
Correct answer is D
Clock-wise moment = Anti-clock wise
Hence 120 × (35−10)= Xg ×(50−35)
120 × 25 = Xg × 15
Xg = 200g
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