SCHOLASTIC APTITUDE PHYSICS
|Time: ONE Hour
Max. Marks: 60
Answers must be written either in English
or the medium of instruction of the candidate in high school.
- Answer all the questions in the booklets provided
for the purpose.
- There will be no negative marking.
- There are THREE sections. Answer all
questions of a section at one place.
- The relevant working in arriving at
an answer has to be shown wherever required. However if
the answer can be arrived at without detailed working,
write only the answer
- Use of calculators or graph papers
is not permitted.
- Marks allotted for individual
sections are given below. All questions in an individual
section carry equal marks
Useful Physical constants:
- Plancks constant = 6.6 x
- Velocity of Light c = 3 x 108
- Electron Volt = 1.6 x 10-19
- Relative density of cork = 0.25
- What temperature change on the Kelvin scale is equivalent
to a 10 degree change on the Celsius scale?
A) 283 K B)
273 K C) 18 K D)
10 K E) 0
- A light year is a unit of
A) acceleration B) distance C)
speed D) time E)
- The critical angle of a material is the angle of
incidence for which the angle of refraction is:
A) 0° B)
30° C) 45° D)
90° E) 180°
- A plane mirror produces an image that is:
A) real, inverted, and
larger than the object.
B) real, upright, and the
same size as the object.
C) real, upright, and
smaller than the object.
D) virtual, upright, and the
same size as the object.
- An object is located 0.20 m from a converging lens which
has a focal length of 0.15 m. Relative to the object,
the image formed by the lens will be:
A) real, erect, and smaller.
B) real, inverted, and
C) real, inverted, and
larger. D) virtual, erect,
- If the frequency of sound is doubled, the wavelength:
A) halves and the speed
B) doubles and the speed
C) is unchanged and the
D) is unchanged and the
- When metal rod 1 is placed in contact with metal rod 2,
thermal energy flows from 1 to 2. A possible explanation
is that 1 has a higher
A) specific heat B) heat capacity C)
mass D) temperature E) Density
- When the velocity of a moving object is doubled, another
physical quantity associated with the object also gets
doubled. This quantity is
A) acceleration B)kinetic energy C)
mass D) momentum E) Potential Energy
- Which of the following could NOT be used to indicate a
temperature change? A change in:
A) color of a metal rod. B) length of a liquid column.
C) electrical resistance. D)mass of one mole of gas at
- Two charges repel each other with a force F when they are
a certain distance apart. The charges are halved and the
distance between them is also halved. The force between
the charges now is
- A mass m of helium gas is in a container of
constant volume V. It is initially at pressure p and
absolute temperature T. Additional helium is added,
bringing the total mass of helium gas to 3m. After this
addition, the temperature is found to be 2T. What is the
- Which would be the most comfortable temperature for your
- A wire of length 50 cm has a mass of 20 gm. If its
radius is halved by stretching, its new mass per unit
length will be
- A string is tied around a cork of mass m and the free end
of the string is attached to the bottom of a water-filled
container with the cork totally immersed in the water.
The tension in the string is:
- A long straight wire conductor is placed below a compass.
When the conventional current in the conductor is from
south to north and large, the N pole of the compass:
points to the south.
points to the west.
points to the east.
has its polarity reversed.
- A beam of light passes from medium 1
to medium 2 to medium 3 as shown in the
accompanying figure. What is true about the
respective indices of refraction (n1,
n2, and n3)?
> n2 > n3
> n3 > n2
> n3 > n1 D)n2
> n1 > n3
> n1 > n2
- A positively charged conductor attracts a
second object. Which of the following statements could be
I. The second object is a conductor with negative net
II. The second object is a conductor with zero net charge.
III. The second object is an insulator with zero net
|A) I only
||B) II only
||C) III only
||D) I &
||E) I, II
- A ray of light is directed toward a
point P on a boundary ( represented by the dotted
line ) as shown to the right. Which segment best
represents the refracted ray?
C) PC D)
- A book is placed on a table. Let FEB
be force exerted by earth on the book, FTB be
force exerted by table on the book, FBT be
force exerted by book on the table and FBE be
force exerted by book on the earth. Among these forces,
the action, reaction pairs are
- You are given three 1.0 W resistors. Which of the
equivalent resistances CANNOT be produced using all three
|A)1 /3 W
||B) 2 /3 W
||C) 1.0 W
||D) 1.5 W
||E) 3.0 W
- Two cars are travelling in the same direction
at 60 kmph and are 30 km apart. A third car travelling at
30 kmph crosses one of the cars at a certain moment. Find
the time elapsed before it crosses the second car. Solve
the problem if the first two cars are travelling in the
- A point object is located at a distance of 30 cm on the
principal axis of a convex lens of focal length 20 cm. If
the lens is moved away from the object by 10 cm, find the
distance through which the image moves.
- From amongst resistances of 2 W ,3 W ,6 W and 7 W , two
resistors are picked and combined first in series and
then in parallel. Their equivalent resistances are found
to be 2 W and 9 W . Find the parallel equivalent of the
remaining two resitances.
- Which of the following is NOT possible
for the images formed by the lens in the
A) real and inverted
B) real and smaller
C) real and larger
D) virtual and erect
E) virtual and
smaller in size
- A cyclist covers a certain distance in 50
minutes riding his bicycle at a certain speed and in 40
minutes riding at a faster speed. If he rides his bicyle
changing his speed from lower to higher speed every ten
minutes how long would he take to cover the distance.
Consider both the cases that arise.
- A horse running along a 5 m wide circular track takes p
seconds more to travel along the outer edge than the time
taken to travel the inner edge. Find the speed of the
- In a certain process initial energy of the system is -13.6
eV and final energy is - 3.4 eV. The enegy loss is
due to the emission of a quantum of light by the system.
If the energy of the quantum of light is given by E=hn , where h is the Plancks
constant and n is the
frequency of the light, Find the wavelength of light
- A metallic sheet of length L, width W and some thickness
is melted and formed in to a hollow cylinder. If the
inner and outer radii of the cylinder are a and b
respectively, and the length of the cylinder is same as
the width of the sheet, Find the thickness of the sheet.
- Two convex lenses of focal lengths 20 cm and 30 cm are
placed 50 cm apart coaxially. (i) A point object is
located at a distance of 20 cm from the lens of shorter
focal length. The rays of light from this object pass
through the first lens and then through the second. Find
the distance where the rays of light converge from the
second lens. (ii) If a parallel beam of light were to be
incident on the first lens and the rays refract a second
time after first converging, find the distance where the
rays converge after second refraction
- In the circuit shown adjacent
junctions are connected by equal resistances. The
effective resistance between junctions A and G
when the resistances between junctions C,E and D,F
are removed is R. The removed resistances are
reconnected and the resistances between junctions
B,D and F,H are now removed. Find the new
effective resistance between A and G.