Questions

A standing wave also known as a stationary wave, is a wave in which its peaks or any other point on the wave do not move spatially.

This phenomenon can occur because the medium is moving in the opposite direction to the wave, or it can arise in a stationary medium as a result of interference between two waves traveling in opposite directions. The most common cause of standing waves is the phenomenon of resonance, in which standing waves occur inside a resonator due to interference between waves reflected back and forth at the resonator's resonant frequency.

Hence, standing wave occurs when a wave reflects upon itself.

To throw up the sponge means to give up a contest or to acknowledge defeat or surrender

HSBC (Hongkong and Shanghai Banking Corporation) is the first bank to introduce ATM concept in India in the year 1987 in Mumbai.

The Original Constitution had classified the Fundamental Rights under  seven groups:

a) Right to Equality

b) Right to Freedom

c) Right against Exploitation

d) Right to Freedom of Religion

e) Cultural and Educational Rights

f) Right to Property

g) Right to Constitutional Remedies

   Now that the Right to Property has been eliminated by the 44th Amendment Act, only six groups now remains.

Here by observing the figure, 

we can complete the above incomplete cube with 2 cubes in 2 rows and 2 columns

=> 2 x 4 = 8.

Hence, with 8 small cubes we can complete the cube.