NTSE Papers
FIITJEE Solutions to
NTSE-2012 –Stage-I (Delhi State)
(For Class X Students)
Paper-2 SAT
DATE OF EXAM : 18-11-2012
Time: 90 Minutes
Max Marks: 90
INSTRUCTIONS TO CANDIDATES
Read the following instructions carefully before you answer the question. Answers are to be given on a
SEPARATE ANSWER SHEET. Use only HB Pencil.
1.
Write you Roll No. very clearly (only one digit in one block) on this booklet and on the
ANSWER SHEET.
2.
This test consists of 90 questions of one mark each. All the questions are COMPULSORY.
3.
Answer to each question by filling the correct alternative among the four choices on the answer sheet. Example:
Q.No.
Correct way:
1
Alternatives
1
1
4
Alternatives
Q.No.
Wrong way:
2
1
2
3
4
4.
Separate sheet has been provided for rough work in this test booklet.
5.
If you want to change your answer erase the earlier filled circle completely and than darken the circle of your choice.
6.
Now turn to the next page and start answering the questions.
FIITJEE National Admission Office
NTSE-ST-I-2012-SAT-QP-2
91.
Sol.
In the given circuit voltmeter shows a reading of 4V, then the power developed across R resistance will be
(1) 15 mW
(2) 14 mW
(3) 12 mW
(4) 10 mW
3
6 = I × 2000
6
I=
= 3 mA
2000
P = VI
= 4×3 mW
= 12 mW
+
10V
–
+
10V
–
2k
R
V
2k
R
V
92.
An electric iron draws a current of 15A from a 220 V supply. What is the cost of using iron for 30 min everyday for 15 days if the cost of unit (1 unit = 1 kW hr) is 2 rupees?
(1) Rs. 49.5
(2) Rs. 60
(3) Rs. 40
(4) Rs. 10
Sol.
1
I = 15A, V = 220V, t = 30 min
Energy = P × t = VI t
30
= 220 × 15 ×
×15
60
1
= 3300 × × 15 W hr
2
= 3.3 kWx 7.5 hr
= 24.75 kW hr
Cost = 24.75 × 2 = 49.50 Rs.
93.
Two different sources of light A and B have wavelength 0.7 m and 0.3 m respectively. Then which of the following statement is true
(1) A has
NTSE-2012 –Stage-I (Delhi State)
(For Class X Students)
Paper-2 SAT
DATE OF EXAM : 18-11-2012
Time: 90 Minutes
Max Marks: 90
INSTRUCTIONS TO CANDIDATES
Read the following instructions carefully before you answer the question. Answers are to be given on a
SEPARATE ANSWER SHEET. Use only HB Pencil.
1.
Write you Roll No. very clearly (only one digit in one block) on this booklet and on the
ANSWER SHEET.
2.
This test consists of 90 questions of one mark each. All the questions are COMPULSORY.
3.
Answer to each question by filling the correct alternative among the four choices on the answer sheet. Example:
Q.No.
Correct way:
1
Alternatives
1
1
4
Alternatives
Q.No.
Wrong way:
2
1
2
3
4
4.
Separate sheet has been provided for rough work in this test booklet.
5.
If you want to change your answer erase the earlier filled circle completely and than darken the circle of your choice.
6.
Now turn to the next page and start answering the questions.
FIITJEE National Admission Office
NTSE-ST-I-2012-SAT-QP-2
91.
Sol.
In the given circuit voltmeter shows a reading of 4V, then the power developed across R resistance will be
(1) 15 mW
(2) 14 mW
(3) 12 mW
(4) 10 mW
3
6 = I × 2000
6
I=
= 3 mA
2000
P = VI
= 4×3 mW
= 12 mW
+
10V
–
+
10V
–
2k
R
V
2k
R
V
92.
An electric iron draws a current of 15A from a 220 V supply. What is the cost of using iron for 30 min everyday for 15 days if the cost of unit (1 unit = 1 kW hr) is 2 rupees?
(1) Rs. 49.5
(2) Rs. 60
(3) Rs. 40
(4) Rs. 10
Sol.
1
I = 15A, V = 220V, t = 30 min
Energy = P × t = VI t
30
= 220 × 15 ×
×15
60
1
= 3300 × × 15 W hr
2
= 3.3 kWx 7.5 hr
= 24.75 kW hr
Cost = 24.75 × 2 = 49.50 Rs.
93.
Two different sources of light A and B have wavelength 0.7 m and 0.3 m respectively. Then which of the following statement is true
(1) A has