Science quiz

Which of the following is non-magnetic in nature?

• Iron

• Nickel

• Cobalt

• Wood

Which is the formula for calculating current?

• Voltage×resistance

• Voltage÷resistance

• Voltage ±resistance

• Voltage×(resistance)²

Who is the first Indian to win a nobel prize in Physics

• JC Bose

• C V Raman

• Homi J Bhaba

• Vikram sarabhai

What is the charge of an electron?

• Positive

• Zero

• Negative

• Neutral

What is the charge of an electron?

• Positive

• Zero

• Negative

• Neutral

What is human audibility range?

• 20 Hz

• Below 20 Hz

• Above 20 k Hz

• 20 Hz- 20 k Hz

Which of the following waves require a medium for its propagation?

• Light waves

• Sound waves

• Waves formed on string

• Em waves

The conversion of heat energy into mechanical energy takes place in which of the following electrical equipment?

• Electric heater

• Refrigerator

• Electric bulb

• Generator

What is the value of speed of light in vacuum?

• 300000 km per second

• 300 km per second

• 375 km per second

• 10000 km per second

What is the working principle of optical fibre

• Refraction

• Reflection

• Total internal reflection

• Dispersion