(A) Total internal reflection
(B) Dispersion of light
(C) Atmospheric reflection
(D) Atmospheric refraction
If the length of a simple pendulum is halved then its period of oscillation is?
(A) Halved
(B) Doubled
(C) Increased by a factor √2
(D) None of the above
The value of g is minimum at planet __ and maximum at planet __.
(A) Mars, Saturn
(B) Neptune, Mercury
(C) Mercury, Jupiter
(D) Venus, Saturn
The irregularity in the motion of star is called?
(A) Bumping
(B) Wobbling
(C) Humping
(D) Lumping
When a body is pushed or pulled by a force?
(A) The work done is positive
(B) The work done is negative
(C) The work done is zero
(D) None of the above
Which one of the following is non -renewable source of energy?
(A) Natural gas
(B) Bio gas
(C) Tidal gas
(D) Geothermal energy
Why viscosity of liquid decreases with increase in temperature?
(A) Because volume of liquid decreases
(B) Because density of liquid increases
(C) Viscosity does not change with temperature
(D) Because density of liquid decreases
Who offered to buy Twitter for $41.39 billion recently?
(A) Bill Gates
(B) Elon Musk
(C) Mark Zuckerberg
(D) Larry Page