Question

The graph between wave number ()  and angular frequency (w) is

(a)

(b)

(c)

(d)

Answer

(a)

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Assertion    :  A potentiometer of longer length is used for accurate measurement.

Reason        : The potential gradient for a potentiometer of longer length with a given source of e.m.f. becomes small.

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(c) If assertion is true but reason is false.

(d) If the assertion and reason both are false.

The wavelength Ka X-rays produced by an X-ray tube is 0.76 Å. The atomic number of anticathode material is

(a) 82       

(b) 41

(c) 20    

(d) 10

If work function is $\phi$, then the formula for threshold wavelength is :

Assertion :   The tangent galvanometer can be made more sensitive by increasing the number of turns of its coil.

Reason    : Current through galvanometer is proportional to the number of turns of coil.

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(c) If assertion is true but reason is false.

(d) If the assertion and reason both are false.

The temperature coefficient of resistance for a wire is 0.00125/. At 300K its resistance is 1 ohm. The temperature at which the resistance becomes 2 ohm is

(a) 1154 K

(b) 1100 K

(c) 1400 K

(d) 1127 K

A particle is projected in a plane perpendicular to a uniform magnetic field. The area bounded by the path described by the particle is proportional to:
  1. The velocity.
  2. The momentum.
  3. The kinetic energy.
  4. None of these.

The current through choke coil increases form zero to 6A in 0.3 seconds and an induced e.m.f. of 30 V is produced. The inductance of the coil of choke is

(a) 5 H     

(b) 2.5 H

(c) 1.5 H  

(d) 2 H

In an endothermic reaction the binding energies of reactants and products are e1​, e2​ respectively, then:

Tangent galvanometer is used to measure

(a) Steady currents

(b) Current impulses

(c) Magnetic moments of bar magnets

(d) Earth's magnetic field

Magnetic field does not cause deflection in:
  1. $\alpha-\text{rays}$
  2.  $\beta^+-\text{rays}$
  3.  $\beta^--\text{rays}$
  4.  $\gamma-\text{rays}$