Physics
The inability of a body to change its state of rest or uniform motion along a straight line is called its

Momentum
Inertia
Velocity
Acceleration

ANSWER DOWNLOAD EXAMIANS APP

Physics
Stars twinkle because

the distance of the stars from the earth changes with time.
None of these
the refractive index of the different layers of the earth's atmosphere ch
the intensity of light emitted by them changes with time.

ANSWER DOWNLOAD EXAMIANS APP

Physics
Planets are

non-luminous heavenly bodies
luminous heavenly bodies revolving around a star
luminous heavenly bodies that do not twinkle
luminous heavenly bodies that twinkle

ANSWER DOWNLOAD EXAMIANS APP

Physics
A cyclist leans inwards when he is negotiating a curve so that

No frictional force may be produced between the wheels and the axle
His weight may be reduced
He may increase his speed
Necessary centripetal force may be available from the horizontal component of the normal reaction due to the track to maintain the curved motion.

ANSWER DOWNLOAD EXAMIANS APP