Physics Sample paper for class 10th (2019)

Q.In hypermetrops , a person is not able to see :  (a)Distant  (b) nearby objects   (c) object of different colours  (d) none of these

Q. At the time of sunrise and sun set , the cause of of reddening of sun and its surrounding is due to  …….. of short wave length of sunlight

Q.Commercial unit of electrical energy one kilowatt hour ( 1 KWH ) is equivalent to: A. 3.6 * 106 watt second  (b) 3.6 * 106 joules (c)  both a and b   (d) none of these

Q. What are the properties of good source of energy ?

Q. A lamp of resistance 20 ohm and a conductor of resistance 8 ohm are connected with a battery 8V in series calculate the :(a)Total resistance in the circuit (b)Current flowing through the circuit

Q.what is the power of lens ? define one dioptre power of lens ?(B)an object is situated at the centre of curvature of a concave mirror . make a ray diagram of position , size ,and nature of the image of object .

Q.Explain in detail , the principle , construction , and working of an alternating current generator in detail .

Q.The cloudiness or milky condition of the crystalline lens of person shows which defect of the eye: (a) Cataract (c) Both (a) and (b) (b) Colour blindness (d) None of these

Q. Twinkling of stars is mainly due to:  (a) Reflection  (b) Refraction  (c) Scattering  (d) None

Q. Which of the following do not represent electric power?  (a) P = VI  (b) P=V*Q/T (c) P =I2R  (d) P= I2RT

Q. Which of the following is not a conventional source of energy? (a) Bio-mass  (c) Wind energy  (b) Solar energy  (d) none of these

Q. What are the disadvantages of fossil fuel? Explain in brief.

Q As electric refrigerator of power 400 Ω is allowed to tun 10 hrs. per day. What is the cost of energy to operate it for 30 days at Rs. 4.00 per kWh?

Q. You must have come across the three 'R's to save the environment: Reduce, Recycle and Reuse. Expain in detail.

Q. An object is placed at a position in between tha main focus (F) and the optical centre (O) of a convex lens. Draw a ray diagram showing the position, size and nature of the image formed? (b) What is the power of a lens? Define one dioptre (I D) power of a lens?

Q. Explain in detail, the principle, construction and working of an electric motor.

Q A person who is unable to recognize different colours suffers from: (a) Cataract (c) Both (a) and (b) (b) Colour blindness (d) None of these

Q. At the time of sunrise or sunset, the cause of reddening of Sun is due to the scattering of which rays of light (a) Red rays (c) Both (a) & (b) (b) Blue rays (d) None of these

Q. The resistance of a uniform metallic conductor depends on: (a) Length of conductor (c) Nature of material (b) Area of cross-section (d) All of the above

Q. What is wave energy? Explain in brief.

Q. 6 Ω resistance emits heat energy at the rate of 125 J/s. Find the potential difference across the resistor.

Q. You must have come across the three 'R's to save the environment: Reduce, Recycle and Reuse. Explain reuse in detail.

Q. (a) What is the power of a lens? Define one dioptre (1 D) power a of lens . (b) An object is placed at the centre of curvature (c) of a concave mirror. Draw the ray diagram to depict the position, size and the nature of image formed.

Q. Explain in detail, the principle, construction and working of an alternating current (a.c.) generator

Q. In Myopia, a person can not see: (a) Nearby objects (c) Both (a) and (b)  (b) Distant objects (d) None of these

Q. The main reason behind the advanced sunrise and delayed sunset is the …… of LIGHT . (a) Refraction (c) Both (a) & (b)  (b) Reflection (d) None of these

Q. Which of the following can be used to measure the potential difference? (a) Ammeter (c) Both (a) & (b) (b) Voltmeter (d) None of these

Q. What are the properties of a good source of energy?

Q.How can three resistors of resistance 2 Ω, 3 Ohm and 6 Ω be connected to give a total resistance of 1 Ω?

Q. You must have come across the three 'R's to save the environment: Reduce, Recycle and Reuse. Explain recycle in detail.

Q.An object is situated at a position in between the main focus (F) and optic centre (O) of a convex lens. Draw the ray diagram showing the position, size and nature of the image formed .

Q.What is the power of lens? Define one dioptre (I D) power of a lens. Explain in detail, the principle, construction and working of an electric motor.

Q. In which of the following CFCs is used? (a) Refrigerator (c) Both (a) & (b) (b) Fire extinguisher (d) None of these