Consider the following physical quantities. Energy, power, pressure, impulse, temperature, gravitational potential Which of the above is/are the vector quantity/quantities?

In optical instruments, the lenses are used to form image by the phenomenon of

On which of the following factor does the internal resistance of the cell not depend?

Let there be an object having some chemicals in it. It starts moving with a uniform velocity v, and a chemical reaction starts happening. In this case, which of the following statement/s is/are correct?

1) Chemical reactions happening in the system cannot change the velocity v of the center of mass of the object.

2) Chemical reactions happening in the system cannot change the kinetic energy of the particles inside with respect to the center of mass an object weighs 36g in air and has a volume of 8.0 cm of an object.

Select the correct answer using the code given below:

A doctor has prescribed a corrective lens of power +1.5 D. Which of the following is correct about the lens?