Assertion (A): A higher level language is less efficient that machine language but more efficient than assembly language.

Reason (R): It is easier to learn and use higher level language than machine language.

Assertion (A): If an event A can happen in m ways and another event B can happen in n ways, both can happen in mn ways.

Reason (R): Two events are mutually exclusive if happening of either precludes the occurrence of other.

1. Maximum energy of electrons liberated photoelectrically is independent of light intensity
2. Maximum energy of electrons liberated photoelectrically varies nonlinearly with frequency of incident light.

1. The mantissa and exponent are separated either by e or E.
2. The mantissa and exponent may have positive or negative sign.
3. Default sign of mantissa is positive.
4. Default sign of exponent is negative.

Assertion (A): Feedback control systems offer more accurate control than open loop systems.

Reason (R): The feedback path establishes a link for comparison of input and output and subsequent error correction.