Question: Two coherent sources of light produce interference (destructive) when the phase difference between them is _________?

• 1. π
• 2. 2π
• 3. π/2
• 4. π/4

Question: The distance between any two consecutive nodes or antinodes in a stationary wavelength (λ) is _________?

• 1. λ
• 2. λ/2
• 3. λ/4
• 4. λ/8

Question: Tesla is the unit for measuring:

• 1. Magnetic intensity
• 2. Magnetic moment
• 3. Magnetic induction
• 4. None of the above

Question: Neutron was discovered by: _________?

• 1. Chadwick
• 2. Rutherford
• 3. Neil Bohr
• 4. Einstein

Question: The synopsis of Einstein’s equation E = mc² is that:

• 1. The faster you move, the lighter you get
• 2. The faster you move, the heavier you get
• 3. The slower you move, the heavier you get
• 4. None of the above

Question: A___________has no size or shape, just position.

• 1. line
• 2. bottom
• 3. point
• 4. vertex

Question: Force 100N is applied on a wire produces extension 5mm in it. Energy stored in it is:

• 1. 0.125 J
• 2. 0.250 J
• 3. 0.50 J
• 4. 1 J

Question: The unit of power is _________?

• 1. watt
• 2. Joule
• 3. Newton
• 4. Pascal

Question: Newton’s first law of motion gives the concept of _________?

• 1. Energy
• 2. Work
• 3. Inertia
• 4. Momentum

Question: In addition to the daughter nucleus and an electron or positron, the products of a beta decay:

• 1. Neutrons
• 2. Neutrino
• 3. Alpha particle
• 4. Proton