The ratio of displacement to distance can not be___________?

A. Equal to one
B. Less than one
C. Greater than one
D. All are possible

When a projectile moves upward , its vertical component of velocity?

A. Decrease
B. increase
C. Remains same
D. None of these

A vector can have maximum________components in space.?

A. Zero
B. Two
C. Three
D. Infinite

Optics does not deal with ___________?

A. Nature of light waves
B. Properties of light
C. Characteristics of sound
D. Lenses and mirrors

Which of the following is a good moderator?

A. Helium
B. Cadmium
C. Graphite
D. Ordinary Water

Length, mass, time, intensity of light and amount of substance are examples of ____________?

A. Base quantities
B. Derived quantities
C. Prefixes
D. Quartile quantities

For what value of “a” , the magnitude of a vector A= 2i^+j^+ak^ should be 3?

A. -2
B. 2
C. 4
D. Both A & B