If three resistors of 1 Ohm each connect in parallel to each other the resultant resistance is
1/3 Ohm
Correct Answer: (b) 1/3 Ohm
Explanation: The formula for the total resistance of resistors in parallel is 1/R = 1/R₁ + 1/R₂ + 1/R₃. Here, R = 1/3 Ohm.
Which one of the following statements is NOT correct?
A car has an initial velocity of 12 m/s and is brought to rest over a distance of 45 m. The acceleration of the car is
What is the colour of the light emitted by the Sun?
Lightning occur in the sky when two clouds:
With reference to street-lighting, how do sodium lamps differ from LED lamps?
1. Sodium lamps produce light in 360 degrees but it is not so in the case of LED lamps.
2. As street lights, sodium lamps have a longer life span than LED lamps.
3. The spectrum of visible light from sodium lamps is almost monochromatic while LED lamps offer significant colour advantages in street lighting.
Select the correct answer using the code given below.
In a pressure cooker, the temperature at which the food is cooked depends mainly upon which of the following?
1. Area of the hole in the lid
2. Temperature of the flame
3. Weight of the lid
Select the correct answer using the code given below.
The famous phenomenon 'Raman Effect' discovered by Nobel laureate CV Raman is related to which field of physics?