NTSE SAT Physics Papers 03

NTSE SAT Physics Papers 03

This is NTSE SAT Physics Papers 03 .. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
A heater coil is cut in to two equal parts and only one part is now used on the heater instead of the original one. Heat generated by one half of the coil would be how much in comparison to that of the full length coil?
  • A
    4 times
  • B
    Half
  • C
    \(\frac{1}{4}th\)
  • D
    2 times
    Correct
2
A current of ‘i' ampere flows along an infinitely long straight thin walled tube of radius r. Then the magnetic induction at any point inside the tube is;
  • A
    \(\frac{{{\mu _0}}}{{4\pi }}\frac{i}{r}tesla\)
  • B
    Zero
    Correct
  • C
    \(\frac{{{\mu _0}}}{{4\pi }}\frac{{4i}}{r}tesla\)
  • D
    \(\frac{{{\mu _0}}}{{4\pi }}\frac{{2i}}{r}tesla\)
3
A convex spherical mirror is considered as a suitable rear view mirror for automobiles, because,
  • A
    It always produces real, erect and magnified images
  • B
    It always produces real, inverted and diminished images
  • C
    It always produces virtual, erect and diminished images
    Correct
  • D
    It always produces virtual, inverted and magnified images
4
The image of a candle formed by a convex lens is found to be real and inverted. What change would be found in the nature of this image if the lower half of the lens is covered by black paper?
  • A
    Only the upper half of the candle will be found in the image
  • B
    The image would now be real and erect at the same location
  • C
    The image would now be real and inverted at the same location but its intensity would be reduced to half
    Correct
  • D
    There would be no change in the image of any kind
5
The refractive index of glass with respect to air is 1.53 and that of water with respect to air is 1.33. Then a convex lens whose focal length in air is 20 cm, when fully immersed in water would have the focal length;
  • A
    3.9 cm
  • B
    7.8 cm
  • C
    20 cm
  • D
    70.49 cm
    Correct
6
A charged particle is moving in a circular path of radius R in a region of constant magnetic field B perpendicular to the plane of the circle. The magnitude of B is suddenly changed to \(\left( {B + \Delta B} \right)\).Then what changes in the motion of the charged particle will be noticed?
  • A
    Radius of the circular path remains unchanged but the frequency changes
  • B
    Both frequency and radius of the circular path remain unchanged
  • C
    Both frequency and radius of the circular path would change
    Correct
  • D
    Radius of the circular path changes but the frequency remains unchanged
7
Pick up the odd one out.
  • A
    Air
  • B
    Gun powder
  • C
    Brass
  • D
    A crystal of green vitriol
    Correct
8
Which is not the unit of Force:-
  • A
    Dyne
  • B
    Newton
  • C
    Poundal
  • D
    Joule
    Correct
9
The expansion of a solid body depends on-
  • A
    Nature of the solid only
  • B
    Temperature of the solid only
  • C
    Mass of the solid only
  • D
    Nature and temperature of the solid
    Correct
10
Which country is called the country of Wind mills?
  • A
    India
  • B
    Britain
  • C
    Holland
    Correct
  • D
    America
11
Who was the first President of Atomic energy commission in India?
  • A
    Homi Jahangir Bhabha
    Correct
  • B
    Prof. Meghnad Saha
  • C
    Prof. M.S. Swaminathan
  • D
    Vikram Sarabhai
12
The particles of the medium in the transverse wave move-
  • A
    In direction of the wave motion
  • B
    Perpendicular to the direction of the wave motion
    Correct
  • C
    Oval form
  • D
    Circular Motion (form)
13
The Lens used in the Camera is-
  • A
    Concave Lens
  • B
    Convex Lens
    Correct
  • C
    Biconvex Lens
  • D
    Biconcave Lens
14
Velocity of sound is maximum in-
  • A
    Air
  • B
    Oil
  • C
    Iron
    Correct
  • D
    Water
15
One Volt is equal to-
  • A
    1 Coulomb/Newton
  • B
    1 Newton/Coulomb
  • C
    1 Joule/Coulomb
    Correct
  • D
    1 Joule