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Study of matter, energy, motion and the fundamental forces of nature
13 questions · Page 1 of 1
A body of mass 5 kg moves with velocity 4 m/s. Enter its momentum in kg·m/s.
Which of the following are vector quantities?
In a P-N junction diode, which condition allows current to flow easily?
Two resistors of 4 Ω and 6 Ω are connected in parallel across a 12 V supply. What is the total current drawn from the supply?
A projectile is launched at 30° to the horizontal with initial velocity 20 m/s. What is its horizontal range? (g = 10 m/s²)
Total internal reflection occurs when light travels from:
Which property of a magnet is used in an electric motor?
What is the approximate speed of sound in air at 0°C?
Which mode of heat transfer does not require a material medium?
If the radius of the Earth were doubled (mass unchanged), what would happen to the value of g (acceleration due to gravity) at the surface?
An electric bulb draws a current of 0.5 A at 220 V. What is the power consumed by the bulb?
Which type of friction acts on a body that is stationary and has a force applied to it but has not yet started moving?
When a ray of light travels from a denser medium to a rarer medium, it bends: