Which of the following quantities is a scalar quantity?
Weight
Impulse
Young's Modulus
Acceleration
For every action, there is an equal and and opposite reaction, is Newton's ....................
First Law
Second Law
Third Law
Fourth Law
Which among the following is false about displacement?
It can be positive, negative or zero.
Displacement is never greater than Distance.
Its SI unit is metre.
It is always positive.
Who discovered theory of relativity?
Issac Newton
Albert Einstein
Niel Bohr
Michael Faraday
Which device is used to measure the depth of ocean?
Lexometer
Nanometer
Fathometer
Hydrometer
A person can jump higher on the Moon's surface than on the Earth because
the acceleration due to gravity in Moon is smaller than that on the Earth
the Moon has no atmosphere
the Moon's surface is rough
the Moon's surface is rough
A jug is filled to the brim with water at 0°. A piece of ice floats in it. The moment the ice melts,
water level increases
water level decreases
water level is unchanged
water spills out of the jug
The atomic bomb is based on the principle of
uncontrolled nuclear fusion
Uncontrolled nuclear fission
controlled nuclear fission
controlled nuclear fission
B.
Uncontrolled nuclear fission