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General Knowledge - Physics

Exercise : Physics - Section 1
  • Physics - Section 1
56.
Mach number is used in connection with the speed of
sound
aircraft
spacecraft
ships
Answer: Option
Explanation:
No answer description is available. Let's discuss.
57.
On a stationary sail boat, air is blown from a fan attached to the boat. The boat
moves in opposite direction in which the air is blown
does not move
moves in the same direction in which air blows
spins around
Answer: Option
Explanation:
No answer description is available. Let's discuss.
58.
Rainbow is due to
absorption of sunlight in minute water droplets
diffusion of sunlight through water droplets
ionisation of water deposits
refraction and reflection of sunlight by water droplets
Answer: Option
Explanation:
No answer description is available. Let's discuss.
59.
Stars which appear single to the naked eye but are double when seen through a telescope are
novas and supernovas
binaries
asteroids
quasars
Answer: Option
Explanation:
No answer description is available. Let's discuss.
60.
ML2T-2 is the dimensional formula for
moment of inertia
pressure
elasticity
couple acting on a body
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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