We can produce heat by________________?

Related Mcqs:

1. The value of the steady current which when flowing through the same resistor produces heat at the same rate as the mean rate of heat produced by the alternating current is__________________?

   A. Average current
   B. Sinusoidal current
   C. r.m.s current
   D. Net current

2. The performance of a refrigerator is described by________________?

   A. efficiency
   B. coefficient of performance
   C. both A and B
   D. not described

3. Internal resistance is the resistance offered by________________?

   A. source of EMF
   B. conductor
   C. resistor
   D. capacitor

4. The relation between the escape velocity V esc and orbital speed Vo is given by________________?

   A. V esc = 1/2Vo
   B. V esc = -2 Vo
   C. V esc = Vo
   D. V esc = 2Vo

5. For a simple pendulu,m the restoring force is caused by________________?

   A. Gravity
   B. Spring
   C. Hand
   D. All of these

6. The name of the photon for quantum of light was proposed by________________?

   A. Ampere
   B. Plank
   C. Thomson
   D. Einstein

7. A three-dimensional image is obtained by________________?

   A. Electron microscope
   B. Scanning electron microscope
   C. Magnetic imaging
   D. None of the above

8. An alpha particle can produce fluorescence in__________________?

   A. ZnS
   B. Barium platinocyanide
   C. Calcium tungstate
   D. All of above

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

   A. π
   B. 2π
   C. π/2
   D. π/4

   Submitted by: Rizwan Ayub Saadi

10. Which of the following group of forces can produce equilibrium?

    A. 12N, 5N, 20N
    B. 4N ,2N, 10N
    C. 10N, 18N
    D. 12N, 5N, 15N

    Submitted by: Zahid Jagirani