From the diagram below, calculate the energy stored in the capacitor

• A. 4.0 x 10⁻²J
• B. 4.0 x 10⁻⁴J
• C. 8.0 x 10⁻⁴J
• D. 8.0 x 10⁻²J

Which of the following is not a vector quantity?

• A. momentum
• B. force
• C. temperature
• D. displacement

Which of the following expressions gives the linear magnification produced by a concave mirror of radius of curvature r, if U and V are the object and image distances respectively?

• A. \(\frac{V}{r}\) - 1
• B. \(\frac{2V}{r}\) - 1
• C. \(\frac{U}{r}\) - 1
• D. \(\frac{2U}{r}\) - 1

Calculate the height of the image formed by a pinhole camera of length 12cm used to photograph an object 60cm away from the hole and 70cm high

• A. 10 cm
• B. 16 cm
• C. 5 cm
• D. 14 cm

A current carrying conductor experiences a force when placed in a magnetic field because the

• A. conductor is magnetized
• B. magnetic field of the current interacts with external magnetic field
• C. force is due to the motor principle
• D. electric field of the current interacts with the external magnetic field

Electric energy is measured in

• A. ampere
• B. coulomb
• C. kilowatt-hour
• D. kilowatt

The speed of sound in air is is directly proportional to

• A. its temperature on the celsius scale
• B. ite temperature in the thermodynamic scale
• C. the cube root of its temperature on its celcius scale
• D. the square roor of its temperature on the absolute scale

Which of the following is/arenot true about the heat capacity of a substance?

(i) It is an intensive property

(ii) Its S.I unit is \(jK-1\)

(iii) It is an extensive property

(iv) Its S.I unit is \(jkg-1\)

• A. (i) and (iii) only
• B. (i), (ii) and (iv) only
• C. (i) and (iv) only
• D. (ii) and (iii) only

Which of the following instruments is used to determine the accurate value of the electromotive force of a cell?

• A. voltmeter
• B. meterbridge
• C. voltameter
• D. potentiometer

The distance between a node and its adjacent antinode of a transverse wave is equal to?

• A. half of the wavelength.
• B. the wavelength.
• C. thrice the wavelength.
• D. quarter of the wavelength