Asked | Gurucool - Coolfluencing the world

Q31
An object is placed at a distance of 60 cm from a concave lens of focal length 30 cm.
(ii) List four characteristics of the image (nature, position, size erect/inverted) formed by lens in this case.

Free Response Question Hard View solution

Q32
An object is placed at a distance of 60 cm from a concave lens of focal length 30 cm.
(iii) Draw ray diagram to justify your answer of part (ii).

Free Response Question Hard View solution

Q33
(a) With the help of a suitable circuit diagram prove that the reciprocal of the equivalent resistance if a group of resistances joined in parallel is equal to the sum of reciprocals of the individual resistances.

Free Response Question Hard View solution

Q34
(b) In an electric circuit two resistors of 12 Ω each are joined in parallel to a 6 V battery. Find the current drawn from the battery.

Free Response Question Medium View solution

Q35
An electric lamp of resistance 20 Ω and a conductor of resistance 4 Ω are connected to a 6 V battery as shown in the circuit. Calculate:
(a) the total resistance of the circuit,
(b) the current through the circuit,
(c) the potential difference across the

(i) electric lamp and
(ii) conductor, and
(d) power of the lamp.

Free Response Question View solution

Q36
What is a solenoid? Draw the pattern of magnetic field lines of
(i) a current carrying solenoid and
(ii) a bar magnet. List two distinguishing features between the two fields.

Free Response Question Hard View solution

Q37
Blue litmus solution is added to two test tubes. A and B containing dilute HCl and NaOH solution respectively. In which test tube a colour change will be observed? State the colour change and give its reason.

Free Response Question Medium View solution

Q38
What is observed when 2mL of dilute hydrochloric acid is added to 1 g of sodium carbonate taken in a clean and dry test tube? Write chemical equation for the reaction involved.

Free Response Question Hard View solution

Q39
In three test tubes A, B and C, three different liquids namely, distilled water, underground water and distilled water in which a pinch of calcium sulphate is dissolved, respectively are taken. Equal amount of soap solution is added to each test tube and the contents are shaken. In which test tube will the length of the foam (lather) be longest? Justify your answer.

Free Response Question View solution

Q40
A student is observing the temporary mount of a leaf peel under a microscope. Draw a labeled diagram in proper sequence to show budding in hydra.
OR
Draw a labelled diagram in the proper sequence to show budding in hydra.

Free Response Question Hard View solution

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2019

Q31
An object is placed at a distance of 60 cm from a concave lens of focal length 30 cm.
(ii) List four characteristics of the image (nature, position, size erect/inverted) formed by lens in this case.

Solution

Q32
An object is placed at a distance of 60 cm from a concave lens of focal length 30 cm.
(iii) Draw ray diagram to justify your answer of part (ii).

Solution

Q33
(a) With the help of a suitable circuit diagram prove that the reciprocal of the equivalent resistance if a group of resistances joined in parallel is equal to the sum of reciprocals of the individual resistances.

Solution

Q34
(b) In an electric circuit two resistors of 12 Ω each are joined in parallel to a 6 V battery. Find the current drawn from the battery.

Solution

Solution

Q36
What is a solenoid? Draw the pattern of magnetic field lines of
(i) a current carrying solenoid and
(ii) a bar magnet. List two distinguishing features between the two fields.

Solution

Q37
Blue litmus solution is added to two test tubes. A and B containing dilute HCl and NaOH solution respectively. In which test tube a colour change will be observed? State the colour change and give its reason.

Solution

Q38
What is observed when 2mL of dilute hydrochloric acid is added to 1 g of sodium carbonate taken in a clean and dry test tube? Write chemical equation for the reaction involved.

Solution

Solution

Q40
A student is observing the temporary mount of a leaf peel under a microscope. Draw a labeled diagram in proper sequence to show budding in hydra.
OR
Draw a labelled diagram in the proper sequence to show budding in hydra.

Solution

Subjects

2019

Q31 An object is placed at a distance of 60 cm from a concave lens of focal length 30 cm. (ii) List four characteristics of the image (nature, position, size erect/inverted) formed by lens in this case.

Solution

Q32 An object is placed at a distance of 60 cm from a concave lens of focal length 30 cm. (iii) Draw ray diagram to justify your answer of part (ii).

Solution

Q33 (a) With the help of a suitable circuit diagram prove that the reciprocal of the equivalent resistance if a group of resistances joined in parallel is equal to the sum of reciprocals of the individual resistances.

Solution

Q34 (b) In an electric circuit two resistors of 12 Ω each are joined in parallel to a 6 V battery. Find the current drawn from the battery.

Solution

Solution

Q36 What is a solenoid? Draw the pattern of magnetic field lines of (i) a current carrying solenoid and (ii) a bar magnet. List two distinguishing features between the two fields.

Solution

Q37 Blue litmus solution is added to two test tubes. A and B containing dilute HCl and NaOH solution respectively. In which test tube a colour change will be observed? State the colour change and give its reason.

Solution

Q38 What is observed when 2mL of dilute hydrochloric acid is added to 1 g of sodium carbonate taken in a clean and dry test tube? Write chemical equation for the reaction involved.

Solution

Solution

Q40 A student is observing the temporary mount of a leaf peel under a microscope. Draw a labeled diagram in proper sequence to show budding in hydra. OR Draw a labelled diagram in the proper sequence to show budding in hydra.

Solution

Subjects

Q31
An object is placed at a distance of 60 cm from a concave lens of focal length 30 cm.
(ii) List four characteristics of the image (nature, position, size erect/inverted) formed by lens in this case.

Q32
An object is placed at a distance of 60 cm from a concave lens of focal length 30 cm.
(iii) Draw ray diagram to justify your answer of part (ii).

Q33
(a) With the help of a suitable circuit diagram prove that the reciprocal of the equivalent resistance if a group of resistances joined in parallel is equal to the sum of reciprocals of the individual resistances.

Q34
(b) In an electric circuit two resistors of 12 Ω each are joined in parallel to a 6 V battery. Find the current drawn from the battery.

Q36
What is a solenoid? Draw the pattern of magnetic field lines of
(i) a current carrying solenoid and
(ii) a bar magnet. List two distinguishing features between the two fields.

Q37
Blue litmus solution is added to two test tubes. A and B containing dilute HCl and NaOH solution respectively. In which test tube a colour change will be observed? State the colour change and give its reason.

Q38
What is observed when 2mL of dilute hydrochloric acid is added to 1 g of sodium carbonate taken in a clean and dry test tube? Write chemical equation for the reaction involved.

Q40
A student is observing the temporary mount of a leaf peel under a microscope. Draw a labeled diagram in proper sequence to show budding in hydra.
OR
Draw a labelled diagram in the proper sequence to show budding in hydra.