Question 4936:

• JAMB 2022

Consider the wave equation y = 5mm sin [1cm\(^{-1}\)x - 60s\(^{-1}\)t]. The wave number is?

A. 0.1 cm\(^{-1}\)
B. 10cm\(^{-1}\)
C. 1.0cm\(^{-1}\)
D. 2cm\(^{-1}\)

Question 4937:

• JAMB 2022

An object 40 cm high is 30cm from the pin hole camera. If the height of the image formed is 20 cm. What is the distance of the image from the pin height?

A. 15 cm
B. 70 cm
C. 40 cm
D. 40 cm

Question 4938:

• JAMB 2022

A bar magnet is placed near and lying along the axis of a solenoid connected to a galvanometer. The pointer of the galvanometer shows no deflection when?

A. The magnet is moved towards the stationary solenoid
B. There is no relative motion
C. The magnet is moved away from the stationary solenoid
D. The solenoid is moved away from the stationary magnet

Question 4939:

• JAMB 2022

Tyres are treaded to?

A. Increase weight of tyres
B. Increase friction
C. Increase its longevity
D. Look good

Question 4940:

• JAMB 2022

A car starts from rest and covers a distance of 40 m in 10 s. Calculate the magnitude of its acceleration

A. 3.20 ms\(^{-2}\)
B. 0.25 ms\(^{-2}\)
C. 0.80 ms\(^{-2}\)
D. 4.00 ms\(^{-2}\)