1. The velocity of sound in air at NTP is approximately:
2. In a projectile motion, the horizontal range is maximum when the angle of projection is:
3. Which of the following is a scalar quantity?
4. A transformer has 500 turns in its primary coil and 10,000 turns in its secondary coil. If the input voltage is 220 V, what is the output voltage?
5. A projectile is fired with an initial velocity of 50 m/s at an angle of 30° with the horizontal. What is the horizontal range of the projectile? Take g = 10
6. The unit of force in the CGS system is:
7. Which law states that the force between two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them?
8. A ball is thrown vertically upward with an initial velocity of 30 m/s. How long does it take to reach the highest point? g = 10
9. A circuit has a resistance of 10 ohms and a current of 2 A flows through it. What is the potential difference across the resistor?
10. The half-life of a radioactive substance is 5 years. If the initial quantity is 200 g, how much of the substance will remain after 15 years?
11. Which of the following is not a thermodynamic process?
12. The force between two parallel current-carrying conductors is:
