A cup of milk is placed in a microwave oven. Tell which statements is false. (1) Milk will be heated up only. (2) Cup will remain cool. (3) Both cup and mild will get hot ?

Related Mcqs:

1. T.V sets and microwave ovens emit ___________________?

   A. X-rays
   B. α-rays
   C. β-rays
   D. γ-rays

2. If the density of atoms remain same along any direction in a crystal is called__________________?

   A. Symmetry
   B. Homogeneity
   C. Isotropy
   D. Cleavage

3. A fuse is placed in series with the circuit to protect against__________________?

   A. high power
   B. high voltage
   C. high current
   D. over heating

4. A point source of light placed in a homogeneous medium gives rise to ___________________?

   A. a cylindrical wave front
   B. an elliptical wave front
   C. a spherical wave front
   D. a plane wave front

5. A current carrying conductor is placed in a uniform magnetic field parallel to it. The magnetic force experienced by the conductor is _____________________?

   A. F=1/B
   B. F=1/Bsinθ
   C. F/0
   D. F=1/Bcosθ

6. If a diffraction grating is placed in the path of a light beam it reveals______________?

   A. Wave property
   B. Particle property
   C. Energy particle
   D. Electromagnetic wave property

7. If an object is placed away from 2f of a converging lens then the image will be_______________?

   A. real and erect
   B. virtual and erect
   C. real and inverted
   D. virtual

8. A convex lens of focal length f1 and a concave lens of focal length f2 are placed in contact. The focal length of the combination is_____________?

   A. f2 + f1
   B. f2 – f1
   C. f1f2/f2+f1
   D. f1f2/f1-f2

9. Two convex lenses of equal focal length f are placed in contact the resultant focal length of the combination is______________?

   A. zero
   B. focus
   C. 2 f
   D. f/2

10. When two charges are placed in water then the Coulomb force between them reduces to _____________?

    A. 1/2 times
    B. 1/3 times
    C. 1/78 times
    D. 1/58 times

    Submitted by: M.Irfan