Question : Which British scientist is known for developing the principle of holography in 1947 to improve the resolution of the electron microscope?

Option 1: Werner Heisenberg

Option 2: Lloyd Cross

Option 3: Dennis Gabor

Option 4: Charles Townes

Question : An electron microscope gives higher magnifications than an optical microscope because:

Option 1: The velocity of electrons is smaller than that of light.

Option 2: The wavelength of electrons is smaller as compared to the wavelength of visible light.

Option 3: The electrons have more energy than the light particulars.

Option 4: The electron microscope uses more powerful lenses.

Question : The India Independence Bill was first presented in the House of Commons in London on:

Option 1: August 10, 1947

Option 2: August 1, 1947

Option 3: July 14, 1947

Option 4: July 4, 1947

Question : Bangladesh was a part of Pakistan from ______ to ______.

Option 1: 1947 to 1962

Option 2: 1947 to 1989

Option 3: 1947 to 1958

Option 4: 1947 to 1971

Question : Who among the following is known as the 'Father of Medicine'?

Option 1: Charles Darwin

Option 2: Hippocrates

Option 3: Ernst Hackle

Option 4: Edward Jenner

Question : The purity of a metal can be determined with the help of

Option 1: Pascal's law

Option 2: Boyle's law

Option 3: Archimedes Principle

Option 4: Conservation of mass principle