(A) Ripple tank
(B) A string
(C) Helical spring
(D) Tuning fork
Characteristic of a wave which is independent of the others is called?
(A) Frequency
(B) Aplitude
(C) Wavelength
(D) Speed
What is the equation of Joule’s law?
(A) w=I2Rt
(B) w=IR2t
(C) w=IRt2
(D) w=IR
What is the unit of capacitance?
(A) Farad
(B) Volt
(C) Watt
(D) Ampere
Sound is form of which type of energy?
(A) Mechanical
(B) Electrical
(C) Thermal
(D) Chemical
A doctor counts 72 heartbeats in 1 minute. Its time period is?
(A) 0.83 second
(B) 1.2 second
(C) 60 second
(D) 72 second
Example of simple harmonic motion?
(A) The motion of a simple pendulum
(B) The motion of earth on its axis
(C) The motion of a ceiling fan
(D) Bouncing ball on the floor
Process by which electrons are emitted by hot metal surface is known as?
(A) Boiling
(B) Evaporation
(C) Conduction
(D) Thermionic emission