RRB Group-D 23rd Sep 2018-shift -2
Instructions
For the following questions answer them individually
Question 12
The power of a lens is —2.5 D. The type of lens and its focal length are respectively:
Question 15
An object of mass 20 kg is moving with an uniform velocity of 5$$ms^{-1}$$. What is the kinetic energy possessed by t ?
Question 16
Who predicted the existence of some yet to be discovered elements on the basis of gaps in his periodic table?
Question 18
Seam got ₹ 50 from her father and bought a toffee for ₹ 15. Her mother gave her ₹ 30, but her brother took ₹ 42 from her. How much money was left with her?
