Lab Quiz Sec AZ

In a Newton's ring experiment, the fringe patterns are

• Concentric circles

• Sharp lines

• Concentric ellipse

• None of these

Stefan's law for a perfect black body states that radiated energy is proportional to

• T^-2

• T^-4

• T²

• T⁴

In diffraction by a grating experiment, which of the following light diffracts most

• Blue

• Red

• Violet

• Green

The order of high resistance in leakage method experiment is

• Mega Ohm

• Ohm

• Micro Ohm

• Kilo Ohm

The total length of the wire in potentiometer in our lab is

• 1 m

• 10 m

• 1 km

• 100 cm

In a given experiment, rheostat is used for

• Vary the capacitance

• Vary temperature

• Vary the resistance

• Vary magnetic field

The specific rotation is given by

The Carey Foster bridge experiment is useful in finding the

• Capacitance

• Specific resistance

• Resistance

• None of these

Energy band gap for a pn-junction made up of silicon is

• 1.1 kev

• 0.72 ev

• 1.1 ev

• 0.72 kev

Strength of magnetic field decreases as the

• distance increases from the center of the coil

• distance decreases from the center of the coil

• distance remains unchanged from the center of the coil

• None of these