PINNACLE ACADEMY +2 COLLEGE a. dispersion only b. only total reflection
LAGANKHEL, LALITPUR c. dispersion & total internal reflection d. scattering
Class: - XI Board Examination, 2078. 8. Angle of minimum deviation for a prism of refractive index
Time: - 3hrs F.M:- 75 1.5 is equal to the angle of prism. The angle of prism is
Subject:- Physics P.M:- 27 a. 62° b. 41° c. 82° d. 31°
9. In what unit is the power of lens measured?
[Candidates are required to give their answers in their own words a. watt b. metre c. dioptre d. Hetz
as far as practicable. The figures in the margin indicate full marks.] 10. A hollow sphere of charge does not produce an electric field
at any
(You may use the following values of physical constants wherever a. inner point b. outer point
necessary ) c. surface point d. none of the above
Acceleration due to gravity(g) = 10 ms-2 11. Mesons are made up of
Universal gas constant(R) = 8.31 J/mol.K a. one quark & an antiquark b. two quarks
Specific heat capacity of calorimeter = 400 J/Kg K c. two antiquarks d. three quarks
Group "A"
Circle the best alternatives to the following questions: [11*1=11] Group ‘B’
1. The dimensionally correct relation is Attempts ALL the questions: [8*5=40]
a. pressure = energy per unit volume 12. a. State the laws of limiting friction. [2]
b. pressure = energy per unit area
c. pressure = force per unit volume b. What would be the acceleration of a block sliding down an
d. pressure = momentum per unit volume inclined plane that makes an angle of 45° with the horizontal
2. The sum of two unit vectors is a unit vector. Then their if the coefficient of sliding friction between two surface is
difference will be 0.3? [2]
a. 2 b. √3 c. √2 d. zero c. Why it is difficult to run fast on sand? [1]
3. If a particle is projected in at angle 45°, then the relation Or
between range & maximum height attained by the particle is a. Explain the significance of banking of a curved road. [2]
a. R=4H b. 4R=H c. 2H = R d. None of these
b. Show that the period of oscillation of conical pendulum is
4. When lift is accelerating upward then apparent weight of a
body 𝑙 cos 𝜃
given by 𝑇 = 2𝜋√ [3]
𝑔
a. increases b. decreases
c. becomes zero d. remains same 13. a. At what temperature, do the Fahrenheit & Celsius
5. A car is taking a turn on a level road. It may be thrown thermometer show the same reading. [1]
outward because of the b. An iron rod of length 100 m at 10°C is used to measure a
a. weight b. lack of centripetal force distance 2000 m on a day when the temperature is 40°C.
c. reaction of the ground d. frictional force
Calculate the error in measuring the distance. [3]
6. An air bubble in water will behave as,
a. convergent lens b. divergent lens c. Explain the possibility of water taps burst in severe winter.
c. plane mirror d. plane glass plate [1]
7. In the formation of a rainbow, the light from the sun on water 14. a. What are the characteristics of a gas to be an ideal? [2]
droplets under goes which of the following phenomena?
LAGANKHEL, LALITPUR c. dispersion & total internal reflection d. scattering
Class: - XI Board Examination, 2078. 8. Angle of minimum deviation for a prism of refractive index
Time: - 3hrs F.M:- 75 1.5 is equal to the angle of prism. The angle of prism is
Subject:- Physics P.M:- 27 a. 62° b. 41° c. 82° d. 31°
9. In what unit is the power of lens measured?
[Candidates are required to give their answers in their own words a. watt b. metre c. dioptre d. Hetz
as far as practicable. The figures in the margin indicate full marks.] 10. A hollow sphere of charge does not produce an electric field
at any
(You may use the following values of physical constants wherever a. inner point b. outer point
necessary ) c. surface point d. none of the above
Acceleration due to gravity(g) = 10 ms-2 11. Mesons are made up of
Universal gas constant(R) = 8.31 J/mol.K a. one quark & an antiquark b. two quarks
Specific heat capacity of calorimeter = 400 J/Kg K c. two antiquarks d. three quarks
Group "A"
Circle the best alternatives to the following questions: [11*1=11] Group ‘B’
1. The dimensionally correct relation is Attempts ALL the questions: [8*5=40]
a. pressure = energy per unit volume 12. a. State the laws of limiting friction. [2]
b. pressure = energy per unit area
c. pressure = force per unit volume b. What would be the acceleration of a block sliding down an
d. pressure = momentum per unit volume inclined plane that makes an angle of 45° with the horizontal
2. The sum of two unit vectors is a unit vector. Then their if the coefficient of sliding friction between two surface is
difference will be 0.3? [2]
a. 2 b. √3 c. √2 d. zero c. Why it is difficult to run fast on sand? [1]
3. If a particle is projected in at angle 45°, then the relation Or
between range & maximum height attained by the particle is a. Explain the significance of banking of a curved road. [2]
a. R=4H b. 4R=H c. 2H = R d. None of these
b. Show that the period of oscillation of conical pendulum is
4. When lift is accelerating upward then apparent weight of a
body 𝑙 cos 𝜃
given by 𝑇 = 2𝜋√ [3]
𝑔
a. increases b. decreases
c. becomes zero d. remains same 13. a. At what temperature, do the Fahrenheit & Celsius
5. A car is taking a turn on a level road. It may be thrown thermometer show the same reading. [1]
outward because of the b. An iron rod of length 100 m at 10°C is used to measure a
a. weight b. lack of centripetal force distance 2000 m on a day when the temperature is 40°C.
c. reaction of the ground d. frictional force
Calculate the error in measuring the distance. [3]
6. An air bubble in water will behave as,
a. convergent lens b. divergent lens c. Explain the possibility of water taps burst in severe winter.
c. plane mirror d. plane glass plate [1]
7. In the formation of a rainbow, the light from the sun on water 14. a. What are the characteristics of a gas to be an ideal? [2]
droplets under goes which of the following phenomena?
