NECO Physics Past Questions & Answers - Page 48

236.

The energy stored in a capacitor of capacitance 5 μF is 40J. What is the voltage applied across its terminals?

A.

4V

B.

8V

C.

16V

D.

200V

E.

4000V

View answer & explanation

Correct answer is E

No explanation has been provided for this answer.

237.

Which is a fundamental unit?

A.

ampere

B.

joule

C.

Newton

D.

ohm

E.

watt

View answer & explanation

Correct answer is A

No explanation has been provided for this answer.

238.

An object 8cm in front of a plane mirror moves at a speed of 6cm s^-1 away from the mirror. What will be the distance separating the object and the image after 2s?

A.

8cm

B.

12cm

C.

20cm

D.

28cm

E.

40cm

View answer & explanation

Correct answer is E

No explanation has been provided for this answer.

239.

An electric heater takes 4A when operated on a 250V supply. What is the cost of the electricity consumed at 10k per kWh when the heater is used for 5 hours?

A.

10k

B.

50k

C.

N1.00

D.

N5.00

E.

N10.00

View answer & explanation

Correct answer is B

No explanation has been provided for this answer.

240.

Which colour is deviated least when white light passes through a triangular prism?

A.

green

B.

indigo

C.

red

D.

violet

E.

yellow

View answer & explanation

Correct answer is C

violet color will deviate the most.

Red light shows the least amount of deviation

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