Which of the following statements is not true about velocity?
- (A) Velocity can be negative
- (B) Velocity is a scalar quantity
- (C) An object may possess different velocities but the same speed
- (D) All of these
- (B) Velocity is a scalar quantity
The ratio of gravitational mass to inertial mass is equal to:
- (A) 0.5
- (B) 1
- (C) 2
- (D) None of these
- (B) 1
The moment of linear momentum is known as:
- (A) Angular acceleration
- (B) Torque
- (C) Angular momentum
- (D) None of these
- (C) Angular momentum
Pointing vector is associated with which of the following?
- (A) Power flow in electromagnetic
- (B) Flux in magnetic field
- (C) Charge in electrostatic field
- (D) Current in the electrostatic field
- (A) Power flow in electromagnetic
The unit of “Pointing vector” is:
- (A) Watt
- (B) Joule
- (C) Watt m−2
- (D) None of these
- (C) Watt m−2
Young’s modulus is the property of:
- (A) Gas only
- (B) Solid only
- (C) Liquid only
- (D) None of these
- (B) Solid only
The dimensional formula of torque is same as that of:
- (A) Kinetic energy
- (B) Potential energy
- (C) Moment of force
- (D) None of these
- (C) Moment of force
What is the principle of fiber optical communication?
- (A) Doppler effect
- (B) Frequency modulation
- (C) Total internal reflection
- (D) None of these
- (C) Total internal reflection
Those who study the celestial bodies and their movements is called:
- (A) Stargazers
- (B) Astronomers
- (C) Starwatchers
- (D) None of these
- (B) Astronomers
An apple fell down to the ground from a tree due to:
- (A) Electrostatic force
- (B) Magnetic force
- (C) Gravitational force
- (D) None of these
- (C) Gravitational force