Questions

Velocity of a car does not depend on

Find the resistance (in mega Ω) of a wire of length 10 m, cross sectional area 1 cm2 and made of a material of resistivity 100 Ωm.

Which of the following does NOT contribute to sparkling of diamonds?

What is the heat generated (in J) in a heating element of resistance 800 Ω when a current of 0.2 A passes through it for 40 seconds?

In November 2017, Indian Government approved setting up of ‘Pradhan Mantri Mahila Shakti Kendras’. These will be set up in how many most backward districts of the country?

Scientists of which institute have found a way to induce points to give off dim light to plants by embedding luciferase enzyme?

What of the given below devices converts chemical energy to electrical energy?

During the free fall of the object, the decrease in potential energy, at any point in its path, appears as an equal amount of increase in _________________.