Grade 10 Physics Quiz

If magnification produced by an optical device A is 2(m = 2), then A can be

I. Concave mirror

II. Concave lens

III. Convex lens

IV. Convex mirror

Which of the above statement is correct?

• Only I

• I and III only

• II and IV only

• All of these

Laws of reflection are valid for

I. plane mirror

II. concave mirror

III. convex mirror

IV. rough surface

How many options given above are correct?

• None

• Only two

• At least two

• At most two

The variation of current I through the cross section of the wire over a time interval of 12 second is shown in the graph below. The amount of charge flown through the cross section in 12 seconds will be

• 36 C

• 54 C

• 72 C

• Zero

The magnetic field inside a long straight current carrying solenoid

• is zero

• decreases as we move towards its end

• is same at all the points

• increases as we move towards its end

When light rays enter the eyes, most of the refraction occurs at the

• crystalline lens

• outer surface of cornea

• iris

• pupil

The image shows a light ray incident on a glass prism. The various angles are labelled in the image. The angle of incidence and angle of refraction are represented by _______ and _______ respectively.

• A and D

• B and E

• C and F

• D and F

Observe the circuit diagram shown below. What is being measured using the voltmeter?

• Input voltage V_IN

• Voltage across the resistor R₁

• Voltage across the resistor R₂

• Resistance offered by the resistor

Electrical resistivity of a given metallic wire depends upon

• its length

• its thickness

• its shape

• nature of material of wire

The change in the direction of a wave passing from one medium to another is termed as

• interference

• mirage

• diffraction

• refraction

Light from the Sun falling on a convex lens will converge at

• radius of curvature

• optical center

• focus

• none of these