Laser in Physics MCQs with Answers PDF Download – Test 10

MCQ 46: The potential energy source for inducing fusion reaction is:

1. x-ray
2. laser
3. ultraviolet
4. microwave

MCQ 47: The law stating that "force is directly proportional to product of charges and inversely proportional to the square of separation between them" is called:

1. newton's law
2. coulombs law
3. gauss's law
4. &Ohm's law

MCQ 48: Square coil of side 16 cm having 200 turns rotating in magnetic field of 0.05 T with peak EMF of 12 V will produce angular velocity of:

1. 47 rad s^-1
2. 49 rad s^-1
3. 42 rad s^-1
4. 48 rad s^-1

MCQ 49: During x-ray formation, if the voltage is increased, then:

1. min wave length decreases
2. min wave length increases
3. intensity decreases
4. intensity increases

MCQ 50: 1 GHz of frequency is equal to:

1. 10⁷ Hz
2. 10⁷ Hz
3. 10⁹ Hz
4. 10^-9 Hz